Does Fast Charging ACTUALLY Ruin Your Battery?

[@MaenHadid]

You're becoming more of a truth seeker and journalist than before, you're adding a lot of value as you evolve beyond just reviewing tech to actually help us understand how it works. Thank you Marques.

[@r3za_]

I’m loving this type of content, and glad to see everyone else is supporting it

[@afgh1408]

Lol shut up

[@tamron6014]

not even 30seconds in and he says that the older iPhones charge with 5W which is not true. The included charger is 5W but even my iPhone4s could charge at 12W back then.

[@watchreport]

@@tamron6014but that was the old 30 pin connectors on the iPhone 4s correct?

[@itsmatchew]

Well spoken

[@Ifusee_kami]

Ok, fast charging allow you to charge FAST between 20% to 80% (in 10 minutes with a 120W fast charger). This interval is perfect to preserve battery life and doesn't create much heat. I have a 120W fast charging phone and after one and a half year, I lost ~4% of battery capacity (I use Accubattery to estimate the battery degradation). Basically my battery life hasn't really decreased and I don't have to wait for an hour to use my phone again.

[@JollyOldCanuck]

@@davidjacobs6244 You will understand the virtues of fast charging when you forget to charge your phone and need to leave your house in the next 15 minutes.

[@pleyco]

@@davidjacobs6244 spotted the iPhone user

[@ha-gq3ry]

@@davidjacobs6244 That's not the point.

[@ThePianist51]

@@davidjacobs6244 That’s a dumb argument. I normally charge my phone via MagSafe. But sometimes I gotta take my MacBook power brick to make it charge „quite quickly.“ So yeah. I would love to have some settings to say WHEN and HOW I would like to charge my phone.

[@Ifusee_kami]

@@davidjacobs6244 When you're a power user (Max brightness, 120Hz, 5G, Bluetooth etc), when you don't have a computer, when you play high demanding games, you need to always have your phone running...

[@DBrentWalton]

As a retired engineer who specialized in battery technology, I'm here to say you've done a perfect job explaining battery charging.

[@elrippo649]

simply no, there is so much over simplification. Like it is just wrong at this point.

[@mggevaer260]

Agreed, He says "batteries are kinda like a spunge, they absorb the most energy when they have the least in them". As far as I know, batteries make way more heat when charged from nearly empty, meaning they need to charge a lot slower at that point. So the opposite of what MKBHD said.

[@Mathieu3424]

@@elrippo649 it'sjust simplification, it is not wrong ;)

[@Mathieu3424]

@@mggevaer260 except battery will charge more energy when they start empty, markes was right ;)

[@mggevaer260]

@mateo Yes, obviously it will take more energy to charge an empty battery to full than one that's not empty. But he says "and as it gets closer to full it becomes less and less efficient at absorbing energy". So I think it's clear he was talking about rate of energy absorption, e.g. chatging speed. Li-ion batteries simply can't be charged as fast when close to 0 as for example 15%. That's why if an EV maker for example claims "charges x km in x time", it will often be between 15% and 85%.

[@NiTrO_FuN]

Change audio soundtrack to French, go to 6:53 --> welcome to the future of youtube.

[@Alice11375]

LOL

[@yesmanblue9965]

😂😂😂😂😂😂

[@renealejomorejon6282]

I think I broke my phone

[@Dawd7]

wtf is that bro 😂

JAJAJAJAJA

[@JackMaslovCZLive]

It's mostly all about heat. If less heat is produced and more the heat is spread out, the battery doesn't suffer as much from charging and doesn't wear as much. I don't know what is the exact sweet temperature to achieve 80+ watt charging at, with the least possible wear, but it is hard to maintain as the battery wants to warm up as it charges. Good to also mention that the battery degradation isn't linear to the charge cycles, but it starts off with a large wear amount per charge when it's new, heading to a more mild wear amount. For example, the first 150 charge cycles (lets say degradation from 100% to 97%) could degrade your battery as much as the next 300 cycles would (from 97% degradation to only 94%, instead of 91%).

[@reganbrannigan3006]

the problem here is that he doesn’t mention tests on youtube that show these phones charging at higher temperatures. there really wasn’t enough independent testing shown in this video to answer the question. we can’t just take what a company says to sell their products as the truth

[@notme756]

@@reganbrannigan3006 do u have a few examples, cause im actually curious, he mentioned that theres not a lot of studies on long term charging retention because these phones are newer, so id like to see if there is some stuff already out there

[@notme756]

like actual experiments, not some dude showing his phone exploding or taking a one off temperature with no context

[@reganbrannigan3006]

@@notme756 I didn't mean to say there was anything on the long-term effects, I just meant that there were videos showing the phones charging at higher temperatures and if that is true, according to this video, that would reduce the life of the phones. I'll find a link for you to a video showing charging temps

[@reganbrannigan3006]

@Dikshit pratim Mahanta On Android I don't think it is possible. Try Google, you might be able to see how many charge cycles you have gone through even if you can't see the percentage

[@CharlieMikeNS]

Linus did some experimenting on this a while back, IIRC he found that it's less about how fast the battery is charged, and more about the range. Fully charging and discharging battery puts a lot of stress on it. Doing so repeatedly degrades the battery. Doing so repeatedly while also at high temperature, _really_ degrades the battery.

[@janklas7079]

absolute nonsense. Lipo or Li-ion batteries do not heat up while charging. Only when overcharging. NiMH and NiCD heat up while charging.

[@CharlieMikeNS]

@@janklas7079 They absolutely do heat up when charging at high amperage, lol. It's not just the internal chemical reaction, batteries also have internal resistance as well as the resistance of the circuitry. Perhaps you should enlighten all of the engineers designing these products because they seem to be under the impression that Lithium batteries do heat up when charging. What a bunch of dummies. /s

[@BillyHeany]

@@janklas7079 I'm guessing you watched 0% of the above video???

[@janklas7079]

@@CharlieMikeNS No they do not. I charge lipo's with 5C if in a time crunch. The internal resistance? That would be true for NiMC and NiMH. The typical internal resistance of a lipo is in the megaohms, so that can NOT cause heating up.

[@janklas7079]

In fact, after use my lipo's are hot, and they cool down while charging.

[@goldwinger5434]

Many years ago I was a programmer writing software for a battery development lab. One of the biggest things that we were working on was the most effective way to charge particular types of batteries. We had engineers, chemists, physicists, and, of course, programmers involved. An astounding amount of science for a simple process.

[@MurtazaK1]

Would you be able to tell me what is the best way to charge an iPhone?

[@DavidMijailovic-qi4qm]

What company?

[@Angry-Lynx]

just dont leave it at 100% for longer periods of time, and use it normally. If you plan to have phone less than 2years it almost doesnt matter and just don't bother@@MurtazaK1

[@rinnegan04]

may we know what the most effective way is?

[@angrysocialjusticewarrior]

@@MurtazaK1 The best way to charge an iphone is to take a cable, plug the cable into the phone, and then plug that cable and phone to a power outlet. I hope my comment is very helpful. If you need help with other complicated things such as how to open a door or how to walk, just let me know and I will help you.

[@kyotaku26]

don't activate french audio on this video, it's a nightmare ...

[@maxouilletm]

J’ai pensé que c’était mon iPhone 😂

[@lionelfaveur8336]

Sérieux c’est affreux cette piste mieux vaux la supprimer lol jcomprend pas pk il la laisse …

[@aidan6557]

😂 😂 😂

[@ezequielsilva6652]

Jajajqjqjajajajqja

[@DZQuranlife]

Lol😂

[@SRC267]

I just want removable batteries to make its comeback.

[@michaeltran4546]

*ITS

[@Amor_fati.Memento_Mori]

@@michaeltran4546 ?

[@mathmanchris666]

@@michaeltran4546 bro tryna be a grammar nazi when he don’t even know how grammar works XD

[@mathmanchris666]

Meh, why would I want to do that? I think the phone would have to be plastic on the back and to being able to fold right open. Would feel cheap. Maybe I could pop the battery out to stare at it or to like charge it outside the phone idek good thinking

[@kizzjd9578]

Hot swappable batteries in a tesla would be a game changer. Be able to recharge faster than a petrol station.

[@NsteveA]

This has got to be my all time favorite MKBHD video! It's literally everything you need to know about your phone battery.

[@VesperAegis]

I love all the information packed into this video, extremely educational. Had no idea about the gallium nitride charger, the question of heat, and the bending in Galaxy Note 7 causing the fires! I guess this maybe explains the rectangular sharp cut designs?

[@JB-DJ]

my phone now comes with a 90 watt charger.... That phone comes with 240WAHH!?!?!!??!!!?!

[@guruoo]

I'd certainly take a thicker phone if it meant improved durability, sd card slot, and room for a larger, and/or user swapable battery.

[@stephensnell5707]

Well removable batteries are no more The sealed batteries will be around forever

[@spinnekopje]

Fairphone?

[@uncrunch398]

The best alternative solution is just get one with almost double the capacity you'll ever need in a day. Even that might be overdoing it. Unless you forget to plug it in some days. It will not ever be a nagging issue for you before you replace your phone to keep up with better security of later OSs that you can't upgrade it to.

[@realspeedghxst]

Don't forget the headphone jack

[@uncrunch398]

If you can't get a high enough capacity battery to satisfy you with all of the other features that are a must for you, I suggest keeping a separate portable power brick with you and top it off as needed. Anker is a highly rated and trusted company for making like products.

[@Sify3100]

I love that your videos dont have background music ... & you speak to the audience at a natural pace. Also appreciate your effort to learn the stuff before conveying it to us, thanks bro! :D P.S. Love the humility in your speech, never change!

[@Brisleep1]

Yes! So many channels have loud "background" music that I have trouble understanding the speech of the video, I thought it was me at first, but I have hearing aids now and I can barely hear the subject on many videos.

[@fridaycaliforniaa236]

This is some change, compared to LTT, where sometimes the host is on Ecstazy and speaks like a drug addict ^^

[@jmunayer]

Hey Marques! I worked in the battery industry for 7 1/2 years. I can tell you that if you are very worried about battery health, long term, use the slowest charger you can and don’t use your phone while charging. Charging solutions are improving but lithium batteries have not changed much. I use the 5 watt charger still on a timed plug overnight. My iPhone 13 Pro’s battery health is at 99% still, I have had it since launch. I actually tested this theory with my iPhone 12, I used the 20 watt charger instead and sometimes wireless charging, both of which cause more heat. I saw much more battery degradation in the same time period. I am super interested in what some of these companies have done the last several years and ultimately I think some developing technologies that are on the horizon will solve this issue entirely. Update: I think a lot of you missed that I prefaced my comment with “if you are very worried about battery health”. One more tip, if you have a device you plan on keeping for years and don’t always need the full battery life then you don’t need to charge it to 100%. For example, I have an iPad I use mostly at home. I will often charge it to 70% or 80% then stop. I usually only charge it 100% when I am taking it on the road with me. Follow these steps and you can expect your device to have 95-100% battery health for a much longer time since much of heat and battery degradation occurs at the end of the charge in that 90-100% range.

[@4ll_Pretty_0_Ability]

Is it ok to use your phone while charging as long as it doesn't generate heat like using a low battery consumption apps? I've done it on my old phone and it still seems fine after 5 years till now. I upgraded to Xiaomi Poco f3 with 33w charger a month ago, I usually only use phones to a read comics, novels etc. Which doesn't consume to that much battery.

[@aquariuscaesar2858]

The best solution is use fast charging when it is really necessary but it should not be very often. Not all phones have software to stop charging ta 80% You should always use slow charging all the time except when you really charge quickly.

[@aquariuscaesar2858]

People who use phones no more than 2 years or tech reviewers who get new phones almost free every year or people who can afford to upgrade yearly can use fast charging everyday.

[@bjorncallewaert5841]

I also have the iPhone 13 pro since it's release. So I have been dailying it for about 5-6 months emptying the battery and ending the day always between 10 - 30%. I have always been charging it overnight with an old 5w iPhone charger. Battery health still at 100%.

[@dominus6695]

My car has no AC, hope I get a new one, and that Samsung A21 does better than HTC M8. It's just HOT here in the summer. Do rugged phones use LTO batteries? The HTC M8 batteries were garbage, so happy to have left it behind, but I still like to go to the beach!

[@willlandis133]

An actual test of this would be fun. Charge a few different phones at different wattages over 100 cycles, measure heat during charge, and measure capacity at the end.

[@naveengodara42]

Wouldn't charging multiple SAME phones at different wattages over 100 cycles be more fun?

[@Th3EpitapH]

phone batteries have to be on the list for linus' lab, once that gets up and running

[@hunterwatts1478]

@@naveengodara42 no because that would give you useable data 👍🏻

[@zodsinclair8500]

the real test would take a year or 2 to compare the life of the battery Same Phone, 1 normally charged 1 Super Fast charged, see if the fast charge 1 fails or falters, otherwise were good!

[@swng314]

​@@zodsinclair8500 therein lies the problem Reviewers only get clicks/watchtime on their reviews during the short period when the device is being launched. If the thorough test takes 2 years, not many people will watch when they finally publish results (most customers have already bought the device / don't care). There's definitely a market of consumers who buy old phones, but is that market large enough for reviewers to be incentivized to do this?

[@MrErViLi]

Man I miss the days of user swappable batteries. You never had to worry about running out of juice. You just carried extra batteries with you and in just a few seconds you were back to 100%.

[@2664k]

that sounds so cool, i used to have a phone you could take the battery out. that was the samsung j5. i could've done that! haha

[@lgray8044]

External battery pack does the same thing doesn’t it?

[@2664k]

@@lgray8044 no. You have to charge it, and its wired and larger than a battery

[@michelemariotti8198]

@@lgray8044 absolutely no, I have a pair of wireless headphones (Artics pro) and they come with a spare battery. Basically, I never ever ever charge them, I just swap the battery out. 100% battery in half a second. Trust me, it's amazing

[@tobymacdonald5893]

@@2664k battery cases work too, plus phones with removable batteries dont look the best

[@thecsslife]

Keep Li-ion Battery Health Good- In a Nutshell: 1. 80/20 Rule - Charge your phone from 20% to 80%, this is the best thing you can do for your battery. 10 to 90% is ok. Charging to 100% and discharging to 0% puts a lot of strain on your battery, so do this as little as possible. 2. Charge Rate - The quicker you charge a battery from 0 to 100% (e.g. in 30 mins, 1 hour, 2 hours) the quicker the battery ages. A 10 W charger will preserve your battery better than a 50 W fast charger. Even if battery is cool for slow and fast charging, fast charging will degrade quicker. Even if fast charging only to 80%, it's worse. 3. Temperature - high temperatures and wide fluctuations will degrade your battery quicker. E.g. don't put phone in direct sunlight, keep it cool as much as possible (10 to 25 C is great). 4. Don't hold your battery on charge at 100% overnight. Li-ion battery ages a lot quicker when at 100%(0% is also bad, around 50% is best). 8 hours a day for a year+ is a long time. This gets even worse if it's hot in the room. These tips will make your battery health good for a lot longer. SOURCE: I do engineering, science and research consulting in green-energy storage, with specific interest in battery degradation mechanisms. Feel free to HMU if you are interested in this field.

[@tiararoxeanne1318]

Hi, I just bought a Samsung Galaxy M54. The service center lady told me to use the original 25W fast charger, not even a normal charger with lower wattage. Which will make my battery last longer? Using their original 25W fast charger or a normal charger with a lower wattage? EDIT: I've used a 10 Watt Samsung charger from my old mobile phone for a while. The charger was getting hotter than the 25W fast charger I bought. Maybe the newer technology works better in keeping the temperature of the charger lower. I decided to use the original (newer) charger as suggested by the service center lady. However, I turn the fast charger function on my mobile phone off. Thus, it only delivers 15 Watt of power instead of 25 Watt. To compensate the heat on the battery, I put a cooling gel on top of my mobile phone while beeing charged😅.

[@hhjhj393]

I am only human... I wish the phone just took care of some of this for me automatically. For instance can't the phone just stop charging once it reaches optimal levels? Like why can't the phone just be like, "hey I am at 80% I will stop charging now." Or why can't the phone be like, "hey I am getting too hot I will slow down the charging speed to stay in parameters." Or "Hey I am at 70% and the user plugged me into a fast charger, because I only need to go up 10% to hit 80% I will use a lower charging voltage". Idk.

[@fabioooh]

So its better to fast charge my phone(68 watts) when I wake up and then get ready to go rather than overnight with slow charging?

[@vanderlooloo]

@@hhjhj393it’s possible, iPhone have this function and I believe android have it too

[@dominikstahl9704]

​@@hhjhj393 samsung phones have an option where you can enable that it stops charging at 80%. I have it enabled on my s24 ultra as i want to use it for a longer time

[@drywallpuncher1882]

It would be interesting to make wireless charging more effective by have a charging pad that measures the temp of your phone and can cool both itself and the phone to reduce the heat created by the coils

[@QualityDoggo]

Some wireless chargers have small fans to keep themselves cooler, not sure if it helps the phone.

[@BlairAir]

@@QualityDoggo Any heat reduction, including that which the phone absorbs sitting against the pad will be an improvement.

[@ritwiktiwary8631]

Created a problem by wireless charging then you want to create a solution to that problem. Nice✌️

[@narufan987]

@@ritwiktiwary8631 wireless charging isn't a problem, it's an option

[@LiewLmao]

@@narufan987 heat and inefficiency is a problem from wireless charging lol

[@aslye]

The battery health on my 30-month old iPhone 11 Pro is still at 100%. I can’t explain it, but I’ll certainly take it.

[@mkbhd]

That’s actually incredible

[@StigguLePetit]

How?!

[@MiscEightySeven]

How???? I have a base iPhone 11 and my battery health is at 72%, I bought it February 2020 ;_;

[@Muser0168]

@@mkbhd you don’t say

[@_Boni_]

@@Muser0168 he wrote

[@kenchan123456]

Super informative, would love more videos like this! Longevity and reliability of tech is honestly really overlooked in most tech reviews, so I’m glad to see more stuff like this!

[@tranthuan1402]

TL;DR for anyone wonder: 09:53

[@bhaveshbhatt5870]

Thank you man🎉

[@calvinrohanraj8511]

I work with li-ion cells and have found out that slower charging rates tend to give longer battery life - primarily because of the heating of the cell(s) becoming lower.

[@dragonfireproductions790]

The large surface area of the battery can be a large heatsink. But yes thermal runaway can be an issue. If only LiFePo4 can be shoved inside a phone, also I have found out that there's no limit on how much amps on a battery as the bms immediately cuts it off, I actually tried it with my li ion powerwall

[@user-qj5yw6ws3o]

Use 3310 then

[@blurcak]

Another battery killer is charging over 4,2V.

[@J0hn1o1o]

@@blurcak it depends on what battery you are using. 4.2V is the limit for most batteries with a nominal voltage of 3.6Vr or 3.7V. Phone batteries have chemistries which allow them to go higher. Nominal voltage is 3.85V and max is 4.4V. But in general staying away from the top end lets your battery live longer.

[@professionalpotato4764]

So would wireless charging overnight be better vs cables? It's pretty slow.

[@theFirstAidKit]

I feel like the benefit you get from fast charging helps to retain the battery life. If my phone took 2-3 hours to fully charge, I'd often leave it over night to charge, but with fast charging I usually just plug it in here and there for a few minutes and I have an app that alarms me when the battery is at 80 % so I unplug it. That way I extremely rarely charge it to full and pretty much never let it go below 20 % saving quite a bit of battery life. I have a OnePlus 6T that I bought when it launched, so about 3,5 years ago and my battery health is still at 87 % always charging it with the 30 W fast charging.

[@artdogg50]

That Oneplus 6t is a pretty good early indicator that the technology works well. But still we still gotta see how the 65, 85, and 120w chargers behave in the same amount of time.

[@HotboxedCoffin]

Yes. That’s exactly how I do it. I’m kinda homeless so I have my standard 5w box and cable for at home wherever I may be staying overnight whereas my c-type charger is for when I’m out and about and on the go. I need to buy a type-c power bank since the one I’m using right now is only standard USB.

[@FakeExotic]

Whats the app

[@theFirstAidKit]

@@FakeExotic AccuBattery

[@sbarceaalexandru1456]

I dont know how one plus is,i never had one, but i like them a lot. i had an huawei mate 10 pro. when it came out in 2017 had 22.5w super fast charging. the phone had "inteligent charging" and automatically stop charging at 80%. usualy i leave it overnight everynight. when i bought it. the battery lasted two days for me(medium usage) after 3 years of charging it overnight nearly everynight. the battery was in good shape. i had a full day with that phone. the i just got an Samsung s20 FE 5g. bigger battery 4500. faster charging 25w. and after full charge i just realize that my old mate 10 pro is still on for an entire day,when my brand new samsung just needs a charge after 8PM. also the huawei mate 10 pro after a full charge the phone disconnects from the battery and stays powered by the charger. normaly in the morning when i took it out usualy went from 100% to 99-98 instantly. my new samsung never did this. sorry for my bad english btw

[@znuffie]

Would have been nice to mention that even before fast charging, expected battery life was kind of about the same: after around 2 years, it was normal to lose 20% of your battery capacity

[@Simply_Sonder]

I felt that was made clear when he said that 80% after 2 years worth of charges is the industry standard

[@taz4100]

So has battery chemistry improved and you are giving up a potential longer lifespan for faster charging? They may sacrifice some design capacity for high charging capabilities also. There is typically a sweet spot between charging speed and lifespan and it drops off quickly after that. Lifespan was way less of a concern when phones had removable back covers. Now your stuck with the battery you got for likely longer then 2 years as advancements in phones have slowed down.

[@teddysmith8725]

@Amoled 18w is still relatively low. People were complaining about how slow the 23 watt Pixel 6 charging limiter was, which Google reportedly did for battery longevity reasons. Modern fast charging is like 40-50W.

[@xvirsxvi]

I traded in my iPhone 11 to a 13 pro and my 11 after 3yrs of usage had a battery capacity of 81%. Its not bad tbh

[@luminousfractal420]

They start to degrade after 500 charges. That's roughly a 1year or less lifespan. We have to start defending the return of removable batteries

[@Hillbilly973]

Marques, i am an old guy and you are absolutely the ONLY tech guy i trust and follow. I base all of my tech choices on your research and opinions. AND you have a magic personality. All the best to you young man. JT from downunder.

[@vigilant_1934]

Never trust one influencer. Always do your own research and listen to different perspectives. Read more rather than just watch videos, especially videos that are watched by millions of people. The most popular videos tend to have mistakes/misinformation, an agenda, and/or politics involved (including being paid for by a corporation). There are experts to listen to when it comes to certain aspects/fields of technology. MKBHD is a knowledgeable guy but not always, and he also happens to be the most popular American tech channel on KZbin (or one of them). Millions of dollars are behind his videos so sometimes he can't make certain statements without risking millions of dollars in sponsors, ad revenue, and business. These are things to be aware of when basing all of your tech choices on one person's opinion. Doesn't sound like a good idea now, does it?

[@Hillbilly973]

@@vigilant_1934 hey pal, i am a 60 year old history major, who earned his degrees by reading and research. Mind your own business.

[@somapapp2944]

Mind your own business is probably the worst answer you could've given to a comment that just advised you to be more thoughtful and open when making purchases. Instead of being passive agressive you could've just said you think you are prepared and don't need their help. But you do you

[@Mangaoreader]

​@@Hillbilly973 He was just helping you grandpa you're rude

[@Hillbilly973]

@@Mangaoreader Go away.

[@AngeloVanTerra]

Sometimes I think we as consumers have become desensitized to how amazing our technology is. I like this type of content

[@SirLucidThoughts]

For real, go to even just the year 2010 and wow!

[@farzana6676]

It ain't that amazing. We need batteries that give days of screen on time. Battery capacity technology hasn't improved much for the last 10 years.

[@Shyvorix]

​@@farzana6676Because solid state batteries are too expensive and too difficult to manufacture at the moment to be produced on such a mass scale that phones require. I'll be another 5 to 10 years minimum before we start seeing solid state batteries enter consumer markets. Toyota is teasing solid state batteries for their EVs for 2027 but I couldn't imagine the cost for that unless they made a good breathrough nobody else has yet...

[@scrappycoco3641]

this comment is so dystopian "as consumers"

[@itsdrakegd981]

@@farzana6676there isn't much to improve, nowadays we have basically reached the limit of how much battery we can fit in modern phones, phone size has pretty much doubled since the last decade and reached a size and weight on the limit of what is considered usable for a phone, therefore longer battery life is achieved through software optimization and more efficient chips and engineering, that's the whole reason fast charging exists in the first place

[@JustinPEstrada]

Something to consider on the battery health, as you lose charge, you'll need to charge your phone more often with the loss of capacity. So saying you're "on track" to have 85 percent is not taking into account that you'll charge more as you use them.

[@colindoyle9876]

and cases, wireless charging cook batteries

[@37racso]

@@colindoyle9876 that’s a lie my dude. Modern phones don’t really heat up during wireless charging. Proof: my XS Max bought at launch, sold it with 87% battery health on original battery. Lasted the whole day without problems before I sold it, charged only using a 7.5W cheap wireless charger throughout its life. That’s a 4 year old phone.

[@colindoyle9876]

@@37racso What case?

[@colindoyle9876]

@@37racso My 8+ is at 90% heavy use since day 1 of release. No back on phone to trap heat

[@marcofeature]

@@37racso That's good. My S10e heats up quite noticeably during wireless charging. When picking it up from the wireless charger, it's not hot but it's warm on hands.

[@ailivac]

Remember 6 or 7 years ago when this didn't really matter on anything except an iphone? Down to 60% capacity after a year and you can't afford to replace the entire phone yet? Just buy a new battery for $20-30, and no proprietary tiny screws to remove, adhesive to melt, screens to pry off with suction cups while trying not to break anything, security chips to reprogram...

[@martin8313]

The American model has won

[@EVPaddy]

@@martin8313 and miniaturisation and being water proof. If you don't want that, buy a fairfone.

[@utuber7600]

@@EVPaddy Galaxy S 5 had water prove and an easily exchangeable battery

[@aninditabasak7694]

@@utuber7600 Well, iPhone 6 was the best selling smartphone model of 2014.

[@xalataf3365]

@@aninditabasak7694 …what does that have to do with battery replacement?

[@BenMartinBox]

Nice video. To clarify, it is also important to know the following: Phone chargers do not push electricity into a phone battery. Instead, it is the phone that pulls the current out of the charger. In other words, a 12W charger cannot force 12 watts into a 5W battery. Rather, the phone will pull 5 watts out of the 12W charger. Therefore, you don’t have to worry about the higher watt charger overwhelming a phone battery with a lower watt rating. The battery and charger will negotiate to ensure that the charger only provides electricity in quantities the phone can handle. This is especially true for USB chargers. Q: Is It Safe To Charge Your Phone With A Higher Watt Charger? A: Higher watt chargers are perfectly safe. This is because the phone will only draw the energy it needs to charge the battery. Low-watt chargers are a bigger problem.

[@Loquacious_Jackson]

poop

[@Proudarse]

Why is a low watt charger a problem? I prefer to charge my phone with a 10W charger to reduce heat. Thanks

[@BenMartinBox]

@@Proudarse If you have an electric engine that needs 1000 Watts to run and you only power it with 500 Watts, the engine won't work as it should (or won't work at all). Batteries are a slightly different "animal" but, the concept is almost the same, depending on the battery technology, if a battery requires 12 Watts to charge properly and you only power it with a 5 Watt charger, the charger will be in permanent "drain stress" and can get damaged. Regarding the battery, it may not charge efficiently requiring 3x more time to charge, which can lead to some electrical memory anomalies, that may cause variations in the battery's capacity during its daily life cycle. Stay safe.

[@Proudarse]

@@BenMartinBox I appreciate the response which makes sense. Thanks for your time, Ben 👍🏼

[@BenMartinBox]

@@Proudarse Glad I helped. Stay safe.

[@sammydepresso]

I love how Marques Explains Things, It’s easy to follow, packed full of information at the same time, while not being condescending at all.

[@TwoOneSe7en]

I can’t even begin to tell you how much I appreciate everything you bring to the table, Marques. I’ve been a subscriber and follower since your early college days and you really are one of the true greats in the space. Theres no doubt about it. Thank you for these wonderfully made, informational videos. Never a disappointment.

[@ronstoppable9547]

it's a scam it's not mkbhd giveaway

[@Prash106]

I research batteries for a living and This is something I always thought of when I see companies advertise fast charging. It was interesting to see you cover this in detail and actually explain the science!

[@HotboxedCoffin]

Right? Could you imagine using a defribulator on your battery and it goes from 0% - 100% instantly? Lol

[@Ali-ol7pk]

Shouldnt u already know this if ur job is researching batteries?

[@Prash106]

@@Ali-ol7pk I do. It’s because I understand what happens when you fast charge and it’s implications to battery life, I am interested in the different approaches by companies. Someone like MKBHD making videos like this and explaining the science to a typical customer is really interesting to me!

[@Ali-ol7pk]

@@Prash106 oh okay then

[@steffenstengardvilladsen3740]

As a R/C battery geek i was really disappointed. No testing and mainly using manufacturers own claims and data (e.g. Apple battery life percentage).

[@earthling1984]

My S21 FE is a bit over 2 years old. I've had it set to only charge to 85% since I got it. I only use slow charging (I have the settings in the phone turned off for fast charging and fast wireless charging). I also only use slow (low volt / low amp) chargers as well. I only charge to 100%, or use fast charging with a faster charger, while on vacation. Maybe I forgot to charge overnight, and I need a quick charge before heading out for the day. I've only fast charged like 10 times over the past 2+ years. My battery lasts all day, just like when it was new, and with only 85% charge! I expect to keep this phone another 2 to 3 years. I usually keep phones at least 4 years. Went from S4 to S9, to S21 FE.

[@superhydrocarbon]

I used to work for one of the companies mentioned in this review as a part of their product team and “charging speed” and “battery life” are the only two things the team focuses on, not “battery longevity”. This is because in the market studies we used to do, no customer would ever say that battery longevity is important for them, and that’s because most people are not aware that batteries degrade over time and that there is an inverse relationship between charging speed and battery health. Even other product managers are unaware of this problem. They keep switching phones every 3 months or every year and never get to feel any degradation in battery health. Samsung has an option to disable fast charging on its phones and I feel that’s a must-have option on all phones. Other companies feel that if they give the option to disable fast charging, then it would show their fast charging technology in a bad light, hence people won’t buy the phone.

[@superhydrocarbon]

@Abraham S I agree. The thing with the firms you mentioned is that their primary market is China, and so everything is aligned accordingly. The biggest KPI for software teams is “how many new features we added”, and so every new release will have n number of new and unique features. The western concept of having a product manager for a particular feature and then that PM charts out a roadmap for the feature that spans a few generations of software versions is not followed in Chinese firms. Also, there is a lot of shuffling around of people. A software PM today would be working in sales tomorrow, and vice versa. So there’s little sense of ownership for the feature and hence no long term vision. Things like battery health will be added only when a large number of people start demanding it. Right now only enthusiasts are aware.

[@ChenLiYong]

Well then I think the company you worked for doesn’t have loyal customers if they think their customers are going to switch phones every 3 months. For companies who have loyal customers that use the phone until it broke or no longer supported (like apple), they will have to think about battery degradation, and now even have to show battery health as part of transparency process required by the public.

[@superhydrocarbon]

@@ChenLiYong I actually thought the same but market insights data showed us that we had a higher than average repeat purchase from customers. Slowly I started to understand that I am an enthusiast but a “regular customer” has a very different perspective on technology and different expectations. For Android phones the lifespan for a phone is 2-3 years, after which a person will get a new phone, either due to lack in performance or just poor battery life or everyone around them has newer phones. For iPhone that number is higher, at 3-4 years. I do feel that Google does think about customers long term but OEMs are happy selling more phones to you, so less incentive to spend resources on “long term” features. Apple can think long term because the cost of entering or switching its ecosystem is high, so people usually stick to iPhones. On Android there are so many choices that customer loyalty is inherently much lower (as compared to iOS). Out of all Android brands, Samsung enjoys the most loyalty.

[@ahmadrianto651]

@@ChenLiYong People switch phone recently have no relation with company loyalty. The switch phone with same brand tho, but more recent release. They want the newest phone sometime because want to upgrade the technology, new feature, new camera or sometime just to brag "i can afford new latest phone".

[@genejen]

Thank you for the info, I did not know my Samsung could do this.

[@jojacobs4355]

Very nice presentation on this subject! You can take what you’ve learned to related uses in general: - some of my bigger battery power banks actually charge faster if I unplug them to let them cool off after a certain percentage to plug them in later on. - don’t put your phone on your car’s dashboard in direct sunlight when navigating. Use one of those air roster phone holders so your phone gets cooled by the car’s AC/ventilation while driving.

[@baneverything5580]

It`s very important to protect lithium ion batteries from heat, and especially fully charged ones. Causes rapid degradation and loss of capacity.

[@keent]

@@baneverything5580 this is why i use a cooling fan and stick it on my phone everytime i charge or play with it

[@kiwi8476]

The phone being way too cold also damages the phone so that’s also a bad idea.

[@keent]

@@kiwi8476 wait really? how so?

[@houserhythm]

@@kiwi8476 Being too cold diminishes the usable battery capacity WHILE IT'S COLD; it doesn't do any permanent damage.

[@kswis]

About 45 watts seems to be a sweet spot. Charging and discharging full cycles, quickly, definitely degrades lith-ion batteries. My s21 ultra has a setting to keep it from charging over 85% to extend life a bit

[@georgwrede7715]

This setting should be in every laptop!

[@idkwhatnonamemyself1951]

@@georgwrede7715 ASUS laptops have it

[@nikhilchouhan1802]

@@idkwhatnonamemyself1951 I own Asus Rog G14 and it does have option to charge your battery upto 60, 80 or 100. Though the fact that's more fascinating is that if you install a Linux distro on it, and install asusctl on it, you have the option to change it to any number you like. 30,40,50 or whatever you want. Its quite insane that laptop manufacturers have the option but they won't do it

[@known4709]

@@georgwrede7715 lenovo legion support

[@IAmCjcj11]

@@idkwhatnonamemyself1951 razer really needs this lol. I don't own one but everyone I know who has owned one has had to replace the battery at least once if they've owned it for over a year or two.

[@touhami_dz6458]

u have no idea how much we trust you and how much those videos help us , thank you

[@ReneRitchie]

Phones are so advanced now, between the power management system and the machine learning in the software, I just plug it in or out whenever I need to, and keep it from getting hot, and it works great. I still avoid inductive charging but I'm probably a relic...

[@aninditabasak7694]

Probably you will use inductive charging when the portless iPhone 14 arrives.

[@DylanM15]

I mentioned this more extensively in another comment but curious on your take. Is it not odd that companies are trying to focus on charging faster and wirelessly, which produce more heat, over actual battery life improvements? Current battery tech won’t have much more improvement that can be made on heat dissipation. While it keeps companies pockets lined. I feel it would be much more practical to at least work toward phone batteries that can last 3-7 days. Reducing the amount of times a device is plugged in, because of a longer lasting battery, seems more practical to improving battery longevity. Ex: A phone can get to a battery capacity to be charged only twice a week that’s 104 charges in a year roughly. Which is 72% less charge cycles (and less heat generated and dissipated) than most phones now which are charged daily at least.

[@happyhelpfulhoovy]

@zshxho Machine learning can be used to simulate and optimise solutions incredibly quickly and efficiently. On one hand, an engineer in a laboratory is spending months testing batteries to understand the most optimal charging power function to provide the most power in the shortest time combined with the greatest longevity. On the other hand, you could give your optimal temperature, battery life, charging time and other variables to a computer program that spends a single week simulating batteries and coming up with the same, or better solution in a fraction of the time and cost. Now I'm not a software engineer but in essence this would be a goal for machine learning in battery charging technology. Machine learning is also used while you are using your phone to control how much power is being dedicated for different services and turning them off when they are not needed to conserve energy and increase the life of the battery. I'd assume some phones use a service installed to constantly monitor the charging state and communicate live with the charging brick to optimise the charging cycle instead of just feeding a dumb, non-adaptive function. So even if each phone is made with a battery of varying quality, the phone will still get the longest life possible.

[@ehza]

Yeah same here

[@andyH_England]

@zshxho Samsung calls it adaptive charging as they love their settings. Apple just does it in the background. It learns your charging routine so if you charge overnight it knows this and will charge up to 80% and keep it there until an hour before you wake up and then top-off to 100%. This helps with battery cycles by increasing them.

[@Philipsfuture]

Adaptive charging is one of the best features to curb that. I plug in my phone before bed and when my morning's alarm rings, it's at 100% after charging really slow overnight.

[@aecoIT]

Which cell phone has this feature?

[@parthl4417]

​@@aecoITiPhone

[@NGHmusic]

​@@aecoIToneplus

[@curious.george08]

​@@aecoITIt's a fairly common feature now

[@Daniel-ru8je]

​@@aecoIT pixel, samsung, iphone,nothing phones and more. Its pretty common.

[@april7531]

I've been using a Oneplus phone with 65 watt charger. My battery health after 1 years and 334 days (today). It's at 87%. I use Third party app Accubattery installed since day 1. Edited: i put loud notification to notify me when charging reach 80% an most of the time I don't charge past 80%. Below 20% to 100% once a month sometimes twice. Can't imagine going back to charging speed below this. The convenience of 10 - 15 min 80% charged, now i cannot live without it.

[@yusufaras01]

quite good. fast chargers are totally a gem in phone industry. sheeps can't understand it.

[@CaptainMisery86]

I really just want a smart phone with a replaceable battery. Like a panel on the back I can pop off and pull the batter out rather than having to fully disassemble the phone.

[@Jrod_FPV]

lookup rugged phone. "rugged android" surprisingly many options available, but you do pay a premium for a more mainstream brand that will still fall a bit short of the off brand claimed specs. (whether true or not)

[@zacharysherry2910]

Used to be the case but now there no option on these newer, worse phones.

[@nazmulfahad3044]

Then you’d run into issue with people buying 3rd party batteries because even if manufacturers forbid or lock that, China will come up with a solution and 3rd world demographics (no disrespect as I am part of) will opt for that. With 100 plus watts chargers and that, a 3rd party battery is a serious fire hazard waiting to happen

[@CaptainMisery86]

@@nazmulfahad3044 they'd adapt

[@Laevatei1nn]

didnt they used to do that?

[@TemurGvaradzeTV]

You know, you have played too much Elden Ring when you recognize this sound 0:54 on a tech related channel!!

[@XubeDesign]

you are the only comment that mention this, cheers tarnished

[@audevaazhar2568]

Only maidenless runt’s will notice this sound 😈

[@lone_berserker]

It's the Enemy felled sound effect

[@kdotdo]

Totally thought I was watching an Elden Ring video when that sound came up but then realized it was MKBHD 😂. Maybe he's been playing too. 👀

[@BlubNuge]

Enjoy your arteria leaf

[@koluniko3269]

Apparently, the worst thing to do for your battery (apart from heat), is draining it all the way down to 0%. As the charge decreases, it's harder and harder for the battery to provide the same amount of power and using the phone while below around 10% will apparently cause irreversible damage to your battery.

[@Hhhh22222-w]

Yeah this is true

[@only1sn1not1taken]

Think of your battery as you would your stomach. Too much too fast puts a lot of strain of your stomach. Staying full all the time puts a lot of strain on your stomach. Starvation.....well, ya know. The main issue of irreversible damage to your battery is if it goes to 0% and you toss it in a drawer for a year and you come back and it won't charge at all. These batteries will passively discharge over time and if it ever gets to the point where there's no electrical activate among the cells, they will go dormant or into a "sleep mode". It is virtually impossible to reverse this but sometimes with extreme temperatures (tossing it in the freezer) you can agitate those cells and "wake them up".

[@jameshoiby]

Most devices will not discharge a battery to true 0% charge, despite what the battery level meter says. They are designed to cut off at a certain safe level that won't damage the cell, and display that as "0%" of the usable range on the meter. Where you can get into trouble is if you discharge the battery, then let it sit on a shelf for months, during which battery will continue to self-discharge to a point where the voltage is low enough that it WILL permanently damage the cell(s). To avoid this, I charge my stored devices to 80-ish% every three months to maintain battery health. Edit: Ninja'd

[@sh-bm3is]

@@jameshoiby yes, exactly...my phone's battery says on the top it's total capacity is 3410 mAh but rated capacity is -10% i.e. 3410-341=3069mAh which accounts for 100% of the battery capacity...instead of the whole 3410 as 100%

[@rozrewolwerowanyrewolwer391]

@@sh-bm3is how did you measure it? There is also power loss on voltage converter

[@michael22000]

Did you know, when someone said "Like Button", the actual like button on your screen is actually lighten up? At 3:13.

[@dkreventon]

One important thing to note is that Apple is rating your iPhone's battery health by comparing the actual change capacity to the designed capacity, and NOT the manufactured charge capacity. The battery manufacturing process is not perfect so most batteries come out with 3-7% larger charge capacity, and that is why many iPhone users see their battery degrading only after 6-10 months of usage.

[@Raja995mh33]

Actually, batteries can also be smaller than what the spec sheet says. It's not typical to have 3-7% more but it can also be 3-7% LESS. That's why most Android manufacturers have to capacities listed on their batteries: typical and rated. They're advertising the typical but reality often is the rated capacity. Apple also always underestimates the charging cycles. So 500 cycles is just the MINIMUM the battery should last, not the maximum like most others are listing. In reality, iPhone batteries often last a hell lot longer than those 500 cycles. Battery degradation is also not linear. Back on my iPhone X for example it took about 3 months to degrade from 100 to finally show 99% but then from 99% to 95% it was only about 2 months and a while later it stuck at 92% for almost half a year.

[@SToXC_.]

the battery degradation thingy on iPhones sucks and has 0 accuracy, aida64 /accubattery/ whatever thing with root on android shows a much more accurate one and its actually pretty linear, degrading more the more its degraded and then kinds sitting in the 70-80 range its literally impossible that your battery is perfectly 92% health for 1 year, its just a inaccurate number, batteries degrade over time even without charging them and stored perfectly in a cool dry environment at 60%. Literally every single charge scrapes a bit off your battery's max capacity, kinda like water flowing over a rock and removing material over time its more linear than you think, the irregularities are external factors : like aggressive or normal usage (using your phone to play games and battery is pumping max output also causes a lot of wear compared to just random use), difference in the environment heat such as Winter or summer time, or its just you charging your phone less times on average in a time frame, or, inaccurate % number. but batteries in a controlled environment actually degrade linearly, batteries "are not designed to wear out" so when it happens its "random", but there are so many cells that the casualty gets averaged so you get a consistent pattern of degradation at each cycle , where a new battery is fully functional but has to pump a lot more electrons compared to the same battery but degraded, at the same time, the degraded battery is not fully functional so is more prone to failure even if its working with smaller capacity, you get consistent wear for different reasons.

[@nisx2012]

My 12 pro max is still at 100% after 10 months of use. Guess i got a lager capacity one? Or always charging the phone to 80% and never from bellow 10% actually helps.

[@imfaith99]

My 12 mini lost around 3% in 4.5 months

[@ellisbelll]

I’m on an 11 with 90% after 1 1/2 years

[@friends788]

I am a mobile repair technician and I've seen dozen of battery issues through out my 10 years of experience; a modern Battery with 5W or 10W charger should most likely survive around 3 years before showing any symptoms of degradation and performance; but the problem is not the power brick but the "HEAT". whether we like it or not all phones heat up under specific circumstances such as Gaming for a long period which draw more and more amp from battery to compensate the CPU/GPU needs which causes the Chipset to dissipate heat and that heat will reaches battery and effect electrons inside it. My Conclusion: use your phone in whatever situation you want, the batteries are one of the consumable parts of the phone and sooner or later you must change them to maintain their integrity.

[@richardkloubsky1299]

That is not true at all. If you use you phone cleverly, the battery will survive at least 10 years without any problems. But if you belive that "fast charging does not damage the battery", then, you have to change your battery much more often.

[@friends788]

@@richardkloubsky1299 that would be true under very specific circumstances; it varies on battery cells qualities; but a modern lit-ion battery would never last 10 years; the company’s financial income is based on selling batteries not persevering them to last longer that is why they wont provide you with a 10 years battery item

[@richardkloubsky1299]

@@friends788 Well, I have 7 years old Nubia phone, and the battery still have 82% battery health (I havent measured it exactly, just with Accubattery app). But I have always charged it with 5W (5V, 1A), and only to 80%. I believe that if I used the original (faster) charger, the battery would have been dead now.

[@friends788]

@@richardkloubsky1299i feel naked to say that Nokia is the only company which might be able to pull this up(high quality battery); but as i said earlier, it varies on your usage; anything that can heat up your phone raises probability of battery damage; Do you game hard-core ? Like PUG or COD? I believe NOT; Simple game such as “Doodle Jump” or “Clash of Clans” does not effect battery; So I’m guessing you are an average mobile user (no offense) But I’m glad your phone battery still intact; not many people can take this good care of their phone for as much as you did. Congrats anyhow ✌️

[@richardkloubsky1299]

@@friends788 Yes, I am an average mobile user, I do not use my phone to play 3D games. Few times, the battery got cold (-10°C) or hot (45°C), but that was not very often. The point is, that if you take good care of the battery, it will last very long time without loss of capacity. My advices for long battery life are pretty simple: Do not use higher charging current than 1C Do not charge to more than 80% unless you really need it. Do not charge the battery when it is cold (less than 0°C) Do not let the battery get hot (more than 45°C)

[@thecrow3461]

From my experience, if you keep the charge between 50 an 80% and do not fast charge the device the battery will last extremely long. My previous phone, the pocofone F1 was almost always kept between 50 and 80% charge and i've used fast charging maybe 2 or 3 times, after 3 years the battery was still at 92% health. I now use an iphone and i try to charge it the same way. Slow charging and keeping the phone between 50 and 80%. So far after 4 months its still at 100% battery health. If i fast charge it the phone gets very hot so i still think fast charging should only be used in emergency situations (you forgot to charge it and need to leave in 30 minutes) . Same goes for EV's where fast charging clearly degredes the batteries quicker.

[@abdulbasit9435]

So you bought an alternative charger for your Poco?

[@RaihanLDN]

50% is way too extreme and not realistic unless you're literally always near a charger. I've been bouncing my one plus 6 between 20%-80% (give or take) for 4 years and my battery is still 85~ health. And this is WITH fast charging.

[@elmehdieddouch3333]

Does power bank effect battery health

[@luccahuguet]

except for new tesla LFP battery chemistry, those guys like being charged to 100%!

[@peacer795]

I try to follow the same routine but w/ fast charging. So far my iPhone 12 has 99% battery life with almost 10 months of use!

[@hooman9415]

Holy S#%*, I just randomly switched to the French audio track at 2:40 and my ears literally blew out like the Deepwater Horizon. You gotta hear it.

[@M.i.g.h.t.y_W]

😂 f### its funny

[@brianoh8192]

A year later and people like me still search for this exact video. Thanks again Marques

[@olegmykhalenko1972]

Okay, I understand the point of reducing the charging time from to 2 hours to like 20 minutes. But is it really reasonable to minimize it even farther? Seems like there is not much difference for the average user whether it charges in 7 or 15 minutes. It could be useful for big batteries, like in electric vehicles, where charging time is still a big factor, but in phones it looks like it becomes just a marketing tool, just like megapixels in phone cameras back in the day.

[@shadowmystery5613]

Yeah well it's hard to tell where development will get, as more functionality is added it's going to increase also the power demand of the devices. Which in return leads to new types of batteries and/or bigger batteries. Thus with the old 5-10W charging methods or as of now 120 W charging might not be sufficient/convenient enough anymore to power those future generations of batteries so I think it's actually pretty smart to keep researching.

[@hellterminator]

“Back in the day?” LoL The “108 MP” phones would like a word.

[@olegmykhalenko1972]

@@hellterminator yeah, but it became kinda a niche, since for the majority of customers megapixels are no longer a decision-making factor) cameras are valued as good or bad, but not by technical specifications, because software today makes more work than optics.

[@binal-flecki2387]

I need to go out in 10 minutes and my battery is 5%

[@olegmykhalenko1972]

@@binal-flecki2387 well, that's just some bad management

[@Isaac888]

"I'll link one of them below the like button." 3:13 THAT WAS SO SMOOTH

[@timebroua]

I've Investigated this topic from 2017, and found that impulse chargers DOES kills your battery. To prove my point Ive bought and charge a new iPhone Xs Max from a macbook various USB port adapters (USB 2.0 preferably, because low voltage and slow charge as result), and it make a full charge in 6 hours, but the phone still usable for 2 days of battery life, and after year of consuming, battery health had drop down to 98% for the second year it was 96%, and for the third year, Ive started to use original impulse chargers, and less in one year battery become 78%, and keeps charge only for one day. So in conclusion: Slow charger will save your battery, however impulse charger (even 500mAh) will slowly kill your battery. Hope it helps.

[@DanielKaspo]

Fantastic video, I used to obsess about keeping my phone between 80% and 20% - it's crazy how the landscape has changed and how fast we're able to charge these things.

[@vitormascarenhas4884]

I mean I still prefer to fast charge in 15min, from 20 to 80%. I hear a bip and unplug. That's it.

[@AnoNymous-dh2sv]

wat. that hasn't changed, it's just an omission of the video.

[@whyisitsodifficultomakeahandle]

@dandon1105 so what if he didn't? It was to show appreciation of the creator and it is his 2 dollars, not a thousand or some ludicrous amount. Most probably the guy was just trying to make sure marques heard the comment which he didn't or just to show that he appreciates him. Do you have an issue?

[@MARQUARIUSZARNICKLE]

@dandon1105if a stranger simply tipping another stranger on the internet sets you off, I can’t even fathom what someone living with you would experience. I really hope you’re just trolling

[@CBCuster]

Love my Oneplus 9 with 65W Warp charging. I now charge in the morning while eating breakfast before work. Typically plug it in at like 20-30% and charge to 90-95% in maybe 15 minutes. It's honestly a game changer for me coming from a slower charging phone because I can juice up so quickly as needed

[@dysplasiaanaplasia4128]

That was the magic of one plus i loved in 3t

[@edwinbartels9360]

Got the 9 as well and I'm still impressed by how fast it charges. And if you start charging it after midnight, it will stop at 80% and then tops off your battery just before you wake up. Not that I use this, but it's a cool feature. I usually plug the phone in like 20 minutes before I go to sleep. Works for me.

[@neindanke5550]

And why you dont just charge while you sleeping ? to easy huh :D

[@jaimecrispim7038]

From a chemistry PhD student point of view, your explanation of the battle of batteries was exceptional! You explained all the essential info without getting to technical. Congrats

[@WestviewTrail]

Great video Marques. Thank you. The best analogy for battery charging that I have seen is that of a huge parking. Imagine a huge, empty parking lot. When a car enters the parking lot, it can speed to any space in the lot. But, as the lot fills with cars, subsequent cars have to slow down to avoid collisions and damaging other cars attempting to park or already parked in the lot. The more full the lot becomes, the fewer spaces remain, and the slower cars must travel to avoid collisions. Your battery is the parking lot. Your charger sends electrons "cars" into the battery "parking lot". When your battery is empty, the electrons can fly to the cells in the battery. As your battery fills, the charger must send fewer electrons so as not to damage the battery cells.

[@MvsG18]

Yes it can, but it's hard AF. I've been charging my Redmi Note 9 Pro to the full 30W charge, ever since I got him in December 11, 2020, and the battery still works just as fine as it did the day it came. (Not really because it's got a different Miui version + 2 years of use obviously affects performance) but it still lasts the whole day + a full morning or even sometimes 2 days. Edit: loved the phrase "use your phone as normal", people often forget phones are supposed to work for us, not us to work for them.

[@aunphilversum3204]

I've got the same phone and always charged to 100% and I can't really tell a difference in battery life.

[@luigideff]

30W is fine. The problem is those 100W+ chargers. Or even 60 is already too much.

[@MvsG18]

@@luigideff well 60W, is 30 by each battery, so still isn't a problem.

[@zyansheep]

@@luigideff i'm sure that will change over time...

[@luigideff]

@@MvsG18 yea, true. Maybe that's a sweet spot.

[@Becvar80]

12:26 I work in QC at an LG battery plant. I've seen this exact issue during inspection. Considering the volume of cells they produce daily, it's a fairly rare problem that just results in a cell being scrapped for recycling.

[@Milanin8]

Is there still a battery plant for mobile phones at this point? Since it shut down mobile phone operations and all that.

[@sokosa]

how many of these potential to explode batteries do you think get out to production (put in phones) then? every single battery is not inspected, right? or is it?

[@Becvar80]

The cells made where I am are almost exclusively for electric/hybrid vehicle battery packs, but the basic technology of lithium ion pouch cells is the same.

[@Becvar80]

@@sokosa At least for us, the only cells to get extra inspection are those that are flagged by the automated system. After which they can go through as many as two dozen additional inspection/QC processes before either passing or being scrapped out.

[@sokosa]

@@Becvar80 got it, ty

[@chrisr1382]

One minor correction - the electrons aren't flowing internally (inside) the battery from negative to positive, as your animation shows - they are flowing from the negative through the phone circuitry to the positive (outside of the battery).

[@NeilGirdhar]

There has to be electron flow (via ions) within the battery to complete the circuit, but it goes the other way from positive terminal to the negative one.

[@michele1342000]

@@NeilGirdhar positive to negative/negative to positive is equal. You can see electric current as a flow of electrons or as a flow of "holes" (i don't know how to translate it in english but it's basically the "non presence of an electron" which is also a charge if you think about it) so it's the same thing. Also if you think about it, electrons are negative, so they will go from a place where there are many of them (-) to a place where there's a lack of negative charge (+). So it's just a matter of conventions adopted to represent the electric circuit.

[@amardeep46]

@@michele1342000 holes are perfect 😁

[@NeilGirdhar]

@@michele1342000 "Also if you think about it, electrons are negative, so they will go from a place where there are many of them (-) to a place where there's a lack of negative charge (+). " The flow you describe happens outside the battery. Inside the battery, the electron flow is opposite to this. Electron flows have to balance everywhere. Also, you're mistaken about there being "more electrons" at the negative pole than the positive. The difference isn't the quantity or density of electrons, but the electric potential.

[@kaibooxD]

im proud of myself. my iphone 14 pro is at 98% battery health after a whole year. i try to keep the battery above 40%. i have never let my phone die once. it has only been in the single digits of battery percentage a couple times.

[@CoffeeAd]

Very informative video, I learned somthing new today. Thanks MKBHD

[@emorelix]

A lot of the fast chargers on the market currently have a passive bleed function, that will drain and hold your battery around 95% if you have had it plugged in for a long time and already reached its maximum charge, not just for phones.

[@deViant14]

How would the charger be smart enough to even have that information?

[@Lathixhuman]

​@@deViant14the mobile phone just stops the in take of power from charger

[@OnlyGrafting]

​​@@deViant14the charger and cables can send more than just raw energy you know. USB C is very multifunctional.

[@mikeoxmall9805]

@@deViant14 the same way the charger is smart enough to deliver exactly the voltage and amperage your phone can handle

[@itsme-nq1st]

0:55 love that elden ring sound

[@retest6658]

This is the kind of channel that everyone needs! My friends didn't believe it when I said fast charging is not harmful to the battery. They weren't informed about this, and they still aren't now.

[@letsb3nameless665]

Nice, been wondering about this for a while. I assumed phone companies wanted fast charging regardless of phone longevity so they can sell more replacement batteries and phones. Maybe we are moving in the right direction in terms of tech longevity.

[@baneverything5580]

Heat destroys lithium ion batteries. To extend battery life and double or quadruple the charge cycles don`t run the battery dead (dendrites form causing internal short circuits), and especially don`t leave it dead for any length of time if it does happen, and try not to charge it past 80-90% (damages the internal structure by forming cracks due to swelling blocking lithium ions from storing electricity). A fully charged lithium ion battery that gets exposed to heat (hot car) will lose a lot of its capacity and potential cycles. Also, charging a lithium ion battery in freezing temperatures damages it too. Try to keep it around 60% to 70% charged when possible and only charge it to nearly full if you have to for whatever reason. Don`t leave it fully charged though for long periods.

[@Keepskatin]

@@baneverything5580 Interesting, but i game on my phone and i need 💯 power

[@baneverything5580]

@@Keepskatin Well, that`s the science. It`s particularly valuable for those with expensive off grid solar battery banks.

[@Farengast]

@@baneverything5580 This is why I find fast charging actually improves battery health. It's way easier to avoid charging overnight and charging to 100% when you have fast charging. I plug my phone in for like 20 minutes a day and that's it.

[@ototurmanidze5578]

yes maybe

[@lordtorka]

A lot of laptops have a feature where they will advertise being charged to 100%, but behind the scenes are really going to about 95-98% then letting it drain, then topping back up to that amount. I also noticed the newer samsung phones have an option to stop charging at 85%.

[@BOTYgaming]

I literally noticed this just a few hours ago, installed Linux (elementaryOS) on my laptop and it showed the battery at fully charged, but when I hovered over the icon it showed it at 98%. Seems like Linux doesn't hide that stuff, haha. I know Windows/MacOS will just show 100%.

[@japzone]

Asus ROG Phones also have a "Battery Care" feature, which will cap the battery charge to 80% except during the hours you specify, so you can have it reach 100% by the time you wakeup. I've seen people purposely rig the times so that the 80% cap is on basically all the time, so they never charge their phone to 100%, making their battery last even longer.

[@sndrc9]

yeah I noticed after two years that my Asus ROG laptop has the 60% charge feature, and I am using it since then. I almost never use my laptop without it plugged in so this is a must.

[@badman_iiixiii]

@@sndrc9 My Asus Laptop had the feature through an app but the app disabled it for some reason

[@sirradez]

@@japzone yup, that's what I do. Except I've capped my battery at 90%, so it never reaches 100%.

[@alexb8125]

Great video. I have an iPhone X that I’ve been using since 2017. I leave it on a charger overnight and of course it always charges while using CarPlay. Maximum battery capacity is at 91%. That just goes to show you how good iOS is at managing charging times.

[@crazy_pyromaniac]

Alternatively, we could just have an easily-removable phone battery. You leave one charging while you use the other. When you are running low on battery, you plug in your phone to keep it on, swap the two batteries, and then unplug it again, and you are back to max charge!

[@kamilirsyad5910]

This was the best during Nokia time.. Good old times!

[@Matt-jc2ml]

How could they eavesdrop on you then?

[@sharpasacueball]

Yeah but then your phone wouldn't be waterproof/water-resistent or so I've been told

[@Matt-jc2ml]

@@sharpasacueball this isn't true, they say this to justify non removable batteries. But there are plenty of phones with removable batteries that are waterproof

[@thecour8379]

​@@Matt-jc2mlplease give me some recommendations, I really don't want to give in to the bullshit big companies are saying for their flagships.

[@HugoParedes]

I love your videos, but this didn’t really answer the question. You say “fast charging does not have to ruin your battery life”, and this based on what the manufacturer says. If we look at Apple’s dubious charts and say they’re BS, why should we believe them on this? In the end we still can’t say for sure if it’ll ruin or not.

[@alan5245]

I work on energy storage system of EV in auto OEM, and the short answer to the question is: Yes, definitely. In fact, not only your phone battery, even your car battery dies faster if you do DC fast charge frequently. OEM (starts with a T) don’t tell this you directly, but they do have a hard limit on how many fast charge you can do in a pack lifetime.

[@QualityDoggo]

I think that's a big part of why many EVs can schedule charge times to get it "charged enough" and then slow the last part way down until it's needed

[@dgurevich1]

I charge my EV (not a tesla) at home almost exclusively, and try to charge it to below 85% I also try to charge at night when it's cool. I researched this before buying one, mostly the case with the Nissan leaf, and mostly the reason for its horrendous battery degradation is lack of any kind of thermal management. So I made sure my car's pack has active cooling

[@dimitrijekrstic7567]

@@QualityDoggo no, that's just how Li ion batteries work. The chemistry of the battery requires it.

[@dimitrijekrstic7567]

They don't tell you and they don't need to. Nobody would choose to slow charge their vehicle when they are out and about, everyone would see it as a downgrade. It's a good trade off, and a necessary one when your competitors are combustion vehicles that can replenish their fuel in 60 seconds.

[@dgurevich1]

@@dimitrijekrstic7567 That depends. When on a road trip, that is obviously the case. But most cars are used for pre-planned commutes. Meaning the EV will sit for long periods of time at home or work. Add to that expense of fast charging (in my case cost per kwh is 4 times higher then home tariff) and you got an incentive to charge your car using your home electricity. I own and drive an EV daily and for the 6 months and 24000km I had it, I only needed to charge it 5 times, and out of those 5, 2 were less then 10 minutes just so I would reach home. That doesn't solve the problem for someone who can't charge at home though.

[@hueypautonoman]

I’ve actually changed my charging habits. I don’t plug my phone in at night when it’s usually still at 50% anyway. I wait until morning and charge it while I’m getting ready (to work from home) because I know it’ll be done by the time I start work.

[@fspeshalxo69]

same to me , it's been along time since i charged my phone at night

[@yanzequian]

Recently my phone has a new feature, it remains disconnect from the charger during the night, and depending of my alarm, it starts to charging in a way that it has a complete charge when I wake up. I love that

[@igotdembombs]

I think completely discharging and recharging is an old mentality. Idk if it helps or hurts your battery life.

[@TabalugaDragon]

you should charge it below 80% though, charging above 80% hurts longevity

[@HobkinBoi]

@@igotdembombs I know older chemistries had memory issues where if you discharged them to a certain point and recharged them repeatedly, they may not seem to hold the same level of charge as they're supposed to until you do a proper discharge. Also in some cases, calibration of the battery gauge is done by fully discharging and charging it.

[@Old-Sole]

As an electrical engineer specialising in battery technology, there isn’t a battery in existence that enjoys fast charging or over charging, slow and steady, your battery will thank you.

[@seanrobesyn7808]

Wow, this was actually a really good video. Recently purchased a S23+ and a 45W charger but I saw in another video that it makes almost no difference from a 25W charger. Maybe like 10 minutes in charging time. I went with the S23+ for a bigger battery and faster charging speed. So far I am unable to drain the battery, it's very energy efficient. Thank you for this video.

[@daggermouth4695]

The s23 actually charges slower with the 45W. So does my S20 and S22 ultra even though they have larger 5,000maH

[@dmo848]

Jus got an a54. I hope it's like that for me. Sshhhs that sounds great

[@Papa_Straight]

​@@daggermouth4695yeh that's cause they're supposed to bro. They're capped at 25W only the 23plus and ultra can use 45W

[@andreten4780]

​​​@@daggermouth4695as the person said below. Using a charger that provides more current will not make the phone charge any faster than the charger you got originally with the phone. Current is only pulled by the load. Only way a device charges slower is if you use a cord or charger that provides less current than what was provided. As far as I am concerned what is damaging is using fast chargers that provide multiple voltage rating

[@daggermouth4695]

@@Papa_Straight not according to the Samsung specifications, it says " both s10+ and s20 support 45W charging "

[@tentwo8635]

I think it’s worth adding that it’s not a hot phone that ruins the battery but a hot battery that does so. Most of the time, we don’t even notice this since the phones are made to disperse the heat away from the hot components. But that’s not the same as it not happening. The battery’s insides are still hot before it has the chance to transfer that heat away. So yes, fast charging will indeed heat up the battery more than slow charging and consequently wear out your battery faster. The question is, does it do it to a discernible enough level for us to care? And is the trade off worth it considering the time saved

[@karlrichards]

I love my tech, and now I'm getting a little older I hold on to my phone's longer. With batteries being sealed in phones and not easily replaced, I've always tried to protect the battery health. I've got this habit where I remove the case of the phone, as I see it as it could harm the battery with holding on to the heat and not allowing it to dissipate.

[@harbirsingh7266]

I don't know how much of a difference a case makes. I generally use the slower charger for charging overnight and my 3 year old phone is still going strong.

[@kaphizmey6229]

i do the exact same thing with my phone; maybe it's just psychological, but removing the case has always made me feel a little better about not ruining my phone's battery… although nowadays i kinda have to do it because my phone is old and so is my battery lol

[@karlrichards]

@@kaphizmey6229I think I've done good with mine, 5 years and it's just dropped to the point I feel it.

[@kaphizmey6229]

@@karlrichards same here, except mine is 4 years old and at 77% capacity

[@brucekennedy5274]

Yep when Marcus was talking all about that cooling tech, I was just thinking all those wonderful phone cases ‘blanketing’ the phones and ruining those efforts 😝

[@jassenjj]

The thing is that regardless of the technology, the correlation between longevity and charging speed of batteries is quite clear for more than 100 years. Unless a "smart" technology appears to put each atom at a designated spot in the space of the battery... faster charging would always mean faster degradation.

[@PabAng]

A classmate's thesis in college (electrical engineering) was characterization of lithium ion batteries and the effect of amperage and charge speed on longevity, the conclusion of the thesis is exactly what you've heard before: Try to keep your phone between 20-80 percent if you're fast charging, avoid full cycles, and never fast charge 80-100, also yes fast charging has a negative effect on longevity but it's minimized if you keep it between 20-80

[@zigapauko1]

It is hard to find a “sweet spot”. Some say 30-90% some say 20-80%. I keep mine between 40 and 80% and charge it almost always on less than 10W. After 5 months my Iphone 13 pro max is still at 100% battery health meanwhile Marqueses is at 97%.

[@himanshujoshi5563]

As you said battery health is also depends on SOC (state of charge). Going above 80 is not worse as going under 20. And I'd like to add that fast charging doesn't depend upon the user as the current battery charging system uses CCCV (Constant current till 80 for rapid charging and then constant voltage above 80 for slow charging) technic that's why you see different ampere and voltage ratings on the charger.

[@ClaudioProductionsX]

S22+ has a special mode to keep it a maximum of 85%. Is this OK too, or 80% is still better?

[@davidnaylor83]

@@ClaudioProductionsX 80 is still a little better, but 85 is a lot better than 100.

[@OBAMAINALABAMA]

Nice break downs. You explain tech quite well. Glad I found your channel.

[@busybees913]

Lik seriously I watch this channel all day now never knew I was into tech

[@Dhuxul9]

Obama in Alabama lol 😂

[@OBAMAINALABAMA]

@@Dhuxul9 You have heard of Camouflage? I know I’m silly.

[@JonToyCars]

You just now found his channel?!!

[@Wade_Fucking_Wilson]

OBAMNA

[@soumodeepmete5718]

Need this video again with some more updated information after 2 years

[@PsyberSenpai]

I love when you scientifically explain things, makes you stand out as a tech KZbinr! It would be incredible to see a series of videos like Veritesium but based on tech coming from you.

[@roozbehabbasi2497]

Veribatism is a scientist man with a high level of education, these people are just show offs!

[@iamdalibor]

Then why in the world... Did he not mention about the ability to bypass the battery when gaming while plugged into the wall with a charger that xperia phones have since "heat" is a battery killer? Didn't even say a lick about that ability. No heat while gaming on the phone sounds like it will drastically save your battery. If it's about iPhones only then this is perfect channel for you since other ground breaking features (like on xperias) don't even get mentioned

[@roozbehabbasi2497]

@@iamdalibor True, mkbhd is an obvious isheep

[@redwall1521]

"scientifically explain things"? You mean when he gives a very, very high level explanation of the ions and the electrolyte solution? If you genuinely think these people are "scientifically explaining things", you need to go back to high school and go back to your chemistry and physics classes.

[@fahimp3]

@@iamdalibor He mentioned pass through charging for the rog phone 5...

[@Rider0fBuffalo]

Quality video. I remember when fast charging started to emerge. The Google Pixel 1 fast charged on non PD 5v 2.4a, but the pixel 2 and later require PD chargers for that. I miss that "feature" haha, but better for the devices. I fast charge always during the day, at night just slow, but batteries are cheap so I usually replace them when the phone starts to not last long enough.

[@javabeanz8549]

That's great if you have a phone with a replaceable battery, but many phones and even laptops now are not designed for batteries to be replaced.

[@CassidyOG]

@@javabeanz8549 Ehhhh, the vast majority of mobile phones (as in 99%) have replaceable batteries. You can literally take any phone to any repair shop and get it done within the hour. Laptops are different but most of them are also replaceable unless the machine is glue-based (like Microsoft Surface products). The word I believe you're looking for is: USER-REMOVABLE. A user-removable battery is easily removed in a mattery of seconds. Most phones today do not have user-removable batteries, but this DOES NOT MEAN that their batteries aren't replaceable. The batteries on modern phones are IN FACT REPLACEABLE - they just require tools to access and change the batteries. TL;DR: Batteries are easily replaceable in virtually all modern phones. You can either get a shop to change it for you or you can buy the necessary tools to open up the phone yourself.

[@hsbdbsjsjebbdbsbsb370]

@@CassidyOG try changing the battery on an iPhone 10 and above

[@CassidyOG]

@@hsbdbsjsjebbdbsbsb370 You can get your battery replaced at any Apple-authorized repair shop. Apple also offers their own battery replacement service. Getting the battery replaced is trivial. But yeah, Apple is deffo anti-repair.

[@javabeanz8549]

@@CassidyOG since KZbin refuses to let me edit my comments... If you actually bothered to read what I wrote, I said that the devices were NOT DESIGNED TO BE REPLACED. I never said that they could not be replaced. The average consumer is also most likely to replace the phone with a new or refurbished phone. I am not new to this industry, as I have been working on software and hardware repairs since the 1980's. And my experience with computers goes back to the mid 1970's, taking a BASIC language class at a little local computer store from the head of IT at a local paper mill, on a Poly 88 and an IMSAI, which you had to boot into "monitor ROM" via binary entry on paddle switches. I resisted actually moving from bar and flip phones to a Smartphone until 2015, but I had worked with getting them on WiFi for years. My original Moto X didn't have a battery that was designed to be replaced either, and trying to open the case pretty much destroyed it. Until I went with Moto X4, I had lower end Moto phones that all had replaceable batteries, which was great.

[@joemurphy985]

I’m curious to know how this translates to EVs. On something like a phone, 80% battery life after 800 charge cycles sounds reasonable. However, I hope EVs have engineered solutions to make the battery degradation even more gradual. I would not want to lose 40+ miles in range on an EV after just 2 years of ownership. Would love to see a similar video oriented more towards EV batteries, especially now that so many different companies have entered the EV sector

[@squarewheel9113]

This is not applicable to electric vehicles. Electric vehicles are far more aggressive with thermal and capacity management. Most manufacturers offer an 8-year 100,000 mi warranty on the battery. Severe degradation would qualify for a warranty replaced battery. However, this shouldn't be a common occurrence. Electric car batteries should last between 10 to 20 years. That's not saying after 10 years , the battery is kaput. That just means the battery should not be below a certain percentage of its initial capacity after 10 years

[@Jaymiecain1]

The solution is Nio, a car company whose cars can battery swap. You will always have a healthy battery and always have the latest battery tech.

[@zachohanlon3517]

A Model Y gets roughly 310 miles per charge. That means you would hit 80% battery health at 248,000 miles. And that’s before we get into the active battery cooling and state-of-charge management that EVs have to decrease how fast degradation occurs.

[@markusstrobl1067]

800 cycles on an EV battery with a 200 mile range is still 160,000 miles. But with the active cooling on an EV battery you'll get well over 800 cycles plus most EVs have a greater range than 200 miles.

[@squarewheel9113]

@@nadlax5920 ^^^

[@Kuya_Niel_01]

not only this video is really useful, it also has a great editing and is very entertaining.

[@Leo99929]

I'd love to see some actual cycle life experiments on this. Logging energy in and out of phone batteries over many cycles.

[@BobRooney290]

companies dont care. the faster you ruin your battery the more money they make from you being forced to buy a new phone. they do that on purpose.

[@dylanc2806]

yeah opposed to a youtuber using it for two weeks and saying it's fine

[@jackrodgersjr]

I have over 100 charge tests.

[@dylanc2806]

@@jackrodgersjr what phone is this, what charge rate do you most often use, and what capacity have you lost

[@suparki123]

My exact thought! Just because battery technology is getting better, doesn't mean fast charging doesn't degrade the battery faster.

[@tumopanene1545]

You're legit about to make a whole documentary on tech one of these days and I'd sit and watch the whole thing! lol Keep evolving MKBHD! Much love brother!

[@frankseydel9428]

Thanks for your research. In fact that's exactly what my concerns were. Hopefully these companies are really honest with their stuff though. I don't mind having a larger brick or even a slightly larger phone as long as it works since changeable batteries are a thing of the past.

[@renjamoodyuo3689]

Bold of you to assume they're honest. They'll never tell you the downsides of their own products. Otherwise, how would they make sales?

[@Mitty92]

3:14 YOU CAN DO THAT WITH THE LIKE BUTTON? (in order to see it you have to play 3:14 back and the like button has to be visible)

[@jsfbay1]

Note that splitting the batteries into two cells and putting 25 watts into each of them still equals 50 watts. But obviously it's better if manufacturers are doing it (probably the space between the cells allows for additional heat removal, i.e. cooling.)

[@DmitriyLaktyushkin]

I'm unconvinced, 2x size battery has 1/2 parasitic losses at the same rate of charge. It's hard to imagine an extra heat sink fin between split batteries helping much. Would be nice if someone who knows the actual reason can comment.

[@TheFanatical1]

​@@DmitriyLaktyushkin almost certainly the heat you get from the power running through the copper cabling scales at (and I have no idea what the actual number is) something not proportional to just the wattage you put through it. I would put good money that there's a square or something in there that means two 25W batteries experience less heat per battery than one 50W one does. Like how speed increases energy by the square of the velocity.

[@DmitriyLaktyushkin]

@@TheFanatical1 That's not how it works, a battery at its core is 2 electrodes with electrolyte and separator b/w them. You increase the surface area and discharge rate ncreases/series resistance decreases. You can also vary the lithium layer, the thinner the lower capacity but better thermal performance. If anything the extra packaging of 2 batteries makes the arrangement less efficient. I can imagine an economical reason for making a 2x smaller battery choice if the smaller batteries are already being produced and therefore cheaper.

[@TheFanatical1]

I was talking about the flow rate through the actual electronics (the copper wiring) but I admit I am not an electrical engineer.

[@ezraomondi315]

Organised, educative, informative and utterly paramount in general, this video not only captures attention in the beginning bt constantly engages emotions throughout. An epitome of a great video. Kudos

[@shitmir]

your emotions get engaged by battery charging video??? I hate to even think what happens when girl smiles at you on metro or bus..lol

[@rkgsd]

There are apps that will alarm you once your phone has reached a charge percentage of your choice. Ampere and Accubattery are two that I've used, but note that they don't stop the charging process. It will be up to you to disconnect the cable. Accubattery will also calculate battery health.

[@estebanalbanesi7922]

Samsung now has an option to stop charging the phone at 85%. One thing marques does not mention is that degradation happens exponentially as the charge reaches 100%. It's way better to always keep your phone between 15 and 85%. As a matter of fact, charging from 15 to 85 is only 0.3 cycles. That is straight out the best thing you can do to preserve battery.

[@sythysto8391]

@@estebanalbanesi7922 a charge cycle is from 0 to 100 percent, right? so charging from 15 to 85 percent you charge a total of 70%. 70% should mean a 0.7 charge cycle !

[@zwenkwiel816]

@@estebanalbanesi7922 what I'm wondering is, what is 100% ? like these batteries all have overcharging protection circuits so I'm assuming it's basically up to the manufacturer to decide this limit. why not just install a battery with a higher capacity and then limit it to only charge to 85% and then just call that 100%.

[@estebanalbanesi7922]

@@sythysto8391 the thing is that degradation is not linear, its exponential. The closer you are to 100%, the battery experiences more degradation. That's why charging from 15 to 85% is only 0.3 cycles and NOT 0.7 cycles like you mention. That's why you should really avoid going over 85% of charge. Marques should have mentioned this.

[@sythysto8391]

@@estebanalbanesi7922 Thanks for clarification!

[@WraggyTheGamer]

In my personal opinion fast charging does degrade your battery a lot quicker regardless if it's cool or not, iv spent many years with electric RC plans / cars and also Vaping, and my experience from all this over the last 10-15 years, fast charging degrades your lifespan of the battery massively, Also fast charging it also doesn't last as long per charge cycle to what slow charging does

[@jordanmartinetti8224]

The problem is that we’re taking the manufacturers word for it, we should never do this. I would love to see an actual test of two identical phones charged over 800 cycles. One uses the fastest charge available and another using a slower 5W or 1W charger.

[@MineFullStop]

Why would the companies lie then lose money on having to change the battery at their expense because phones have 2 year warranty some 3 years with extended warranty.

[@shanepatrick641]

How do I buy a 1 watt trickle charger ??

[@David-jx4gw]

@@shanepatrick641 buy an old 5 volt, 250 milliamp power brick and wire your own USB C or micro USB to it.

[@David-jx4gw]

@@shanepatrick641 my 3000mah battery takes 8 hours to charge at 2.5 watts.

[@imarchello]

@@MineFullStop Why would they lose money? How many customers will actually test their claims? Close to none.

[@akshaysingan8436]

Fantastic marques. This is very illuminating. I have used 12 W and a 37 W charger as well for my android phone. The batteries degrade faster over time as well, when you use a higher wattage charger. As you suggested avoiding heat and using only the recommended charger and charging fully from say 5 % to full without keeping it plugged in the whole night seem to be useful for me.

[@NotSheltr]

Seems legit...

[@kingkal81]

Depends on how good the thermal management, if you're using your phone while charging & if adaptive battery works well.

[@nighthood9184]

i always use 33W charger for my Mi 10 since 2020. And also using blackshark Gaming Cooler while charging. Feels in the first time i can play HD game for 3h15min, now in year 2022 just 3h.

[@jimv1983]

Adaptive Battery? 🤣 Adaptive Battery has been a "feature" in Android for like 3 years and it still hasn't made any difference for me.

[@Angry-Lynx]

btw fun fact, the tech to charge lipo batteries to 100% in less than 10minutes was there like 10years ago or longer...... why phones are getting this only now? idk, probably good quality lipos(that can take such charge for hundreds cycles without "runing" it) only now are getting affordable enough for manufacturers to put them in mass production stuff

[@anna.tnguyen]

I’ve had the iPhone 6s Plus and never used a fast charger. After about 2 years, the battery does degrade, naturally so. But I’m glad mkbhd cleared this debate up and even told us an in depth about how heat affects our phones but also what companies are doing to fix this when it comes to fast charging.

[@myrealusername2193]

I was using the 6s until about a year ago, and I had to get a battery replacement because it would completely sh*t itself at about 40% battery.

[@yazansakran3326]

That phone does not support fast charging

[@mtnbkr2011]

Even if you use the higher watt charger, that phone does not support anything higher than 5W

[@myrealusername2193]

@SpaceShip i got a battery replacement and it was instantly fine, if you can spare like 40$ it’s a great idea

[@vikashsamaga]

@@myrealusername2193 iPhone 6s isn't even worth $40, no point in replacing the battery at this point

[@1zieske1]

You need to be an advocate for consumers. Don't let companies forget that they got rid of replaceable batteries. Every review should mention this.

[@akulkis]

Batteries are still replaceable. You just have to take the back off and unscrew a few screws. This really annoys me, because having spare batteries charged up and swapping them is more ergonomic than having an auxillery batteries plugged into the USB port.

[@MisterCasket]

But a lot phones have been glued shut. That means using a heat cannon to soften the glue, use picks or spudger to open it, only to find out the actual battery is glued jn too. As a bonus you lose the warranty.

[@miscl_anon]

@@akulkis what batteries are you referring to? batteries in modern phones are usually glued in to the phone, underneath a back panel that's also glued in. they're usually also attached with ribbon cables you need to unplug

[@4doorsmorewhors]

Why would you need to change a battery? You can do 1 full day on every phone

[@1zieske1]

@@4doorsmorewhors The premise of this video is that batteries wear out and lose their day-long capacity. Phone companies screwed their customers by making it easier to replace a phone than replace the worn-out battery.

[@normansmith9110]

I've noticed that the newer phones and tablets don't get as not as those back ten years ago. An Android 4.1 tablet got almost hot enough to give a first degree burn especially right over the battery. The newer phones and tablets heat up a lot less.

[@Peace_Guard]

12:06 "These smartphone companies all know that battery problems are bad news, so if they're all doing their jobs then we should all be good" Yeah, and that's why thety stopped making the battery replaceable, instead you have to replace the entire phone. They care about you so much!

[@erikchan002]

Instead of being scared of these crazy fast charging destroying my battery, I'm more concerned of more and more companies creating their own standard that is out of USB spec. I have an old(ish) OnePlus brick lying around and it can't even charge any other thing over 10W.

[@SagarKumar23]

Yeah because to support fast charging you need Power Delivery or USB PD. And your old brick is surely not. 😂 OnePlus started PD from OnePlus 8T itself. I can charge my Dell Laptop with the OnePlus 65W Power Brick. 😂😂

[@AndreaAlison]

Yes!

[@aninnymoose720]

my op7t charger powers led strip lights. learn to solder. pretty fun

[@klvn2266]

you forget, its not just the device these companies made.. USB spec changes too..

[@Raja995mh33]

And yet, everyone is only complaining about Apple and their proprietary port. Apple us using the universal Standard PD.

[@AS-iq7dt]

What I do with my Mac and IPhone to preserve battery health is to only charge up to 80% and try not to let it get under 20%. The battery life and efficiency on devices now is pretty great, especially since I'm not much of a power user so I can easily end my day on 40%. I feel completely comfortable leaving for work with only 80% and doing that every day longer preserves the life of the battery. Like mentioned in the video, batteries don't like being at 0% or 100%. So the closer you keep the battery to 50% the better.

[@KemalAhmedIsAwesome]

same. my pixel 3a has had 1800 charges and is still at 76% health because of this rule

[@stephensnell5707]

I charge to 100% each night and it takes a good 4 years for me to notice a lot of degradation

[@JasonJia11]

The only caveat is that once in a while you should do a full discharge to full charge cycle to recalibrate the battery. Batteries may be smart but they're not perfect. It might vary depending on the device though