All you need to know about 18650 batteries

[@jydymyyyr9630]

One of the more informative battery videos I've seen. Thanks!

[@a.a.alexander6030]

Great video. You dont speed or mumble but talk clearly. Thats me attended your classroom. I walked in knowing nothing and came out knowing everything. Brilliant!

[@AEZAEZEL-187]

Thanks for making this video and learning us about 18650 batteries. The first time i came across 18650 batteries was when i was vaping. I saw many 18650 batteries with flat button tops and batteries with button top some of my vape devices pushed the button top inside the battery which damaged the battery untill i could not charge them properly. So now i know there are two types of 18650 batteries. The last buttontop 18650 battery i purchased is the Ansmann 18650 with 3350 mAh for my XHDATA D808 radio. It came with a 2000 mAh XHDATA battery but i replaced it with a Ansmann 18650 mAh 3350mAh one so that i could listen to my radio longer without USB-C charging! Thanks for sharing Tenergy Official!

[@germanperalta4078]

Such an awesome video, equivalente of hours of research. Easy to understand too! Thank you!

[@Caderic]

Thankyou!!! Today, I learned something new!

[@einnotoptimal6701]

very informative, you go in-depth for all the bullet points listed, so I didn't need to google anything extra, thanks.

[@NR-xx7dn]

Gee this is one video I should of watched before buying rechargeable batteries ! Lesson learnt .

[@ehabeid6710]

Very informative, Thank you!

[@eyesthere]

Thanks so much, I've been looking at these batteries for the past 2 days and I'm learning more from this video.

[@cgreene3745]

Should have included here when talking about capacity the scams, and clearly state any battery claiming to be more than 3500/3600mAh is a scam. And a mention on the weight, high density batteries (3000-3600mAh) tend to weigh 45g up to about 48g. Some of the batteries on Amazon and eBay state capacities of 9000mAH and 9999mAh - these are SCAMS.

[@Machria23]

The industry needs to GET RID OF THE “18650” battery COMPLETELY, and rename the different size, type and styles od the different 18650’s to NEW NAMES! It is DANGEROUS the way it is now, and really stupid. 95% of people have no idea what voltage, current and AH or MAH means, or what the discharge rate means, or worse, what the device they are using requires or calls for. In fact, as someone who’s fairly well educated on the subject, I too have a problem figuring out which type to use in many of my devices. Most products today, and there are LOTS of them, do not document what discharge rate they prefer i their devices, OR even what AH they require, if any. Sure, a simple flashlight doesn’t really care, BUT, it can be dangerous!! And worse, many vape devices are VERY sensitive to the differences. Many 18650’s say right on them “Not for use in vapes”, yet the specs are EXACTLY what the vape device calls for. STOP MAKING 18650’s PLEASE! Split them into NEW model names properly as should have been done in the first place. Something like: 18651 = Plain rechargeable 18x65mm 2000 to 2500 mAh capacity with no control board, low discharge rate 18652 = above with addition of control board, 18x 67mm, high discharge rate 18653 = High capacity 18x65 2600 to 3600 mAh capacity with no board, low discharge rate 18654 = above with addition of control board, 18x67mm, high discharge rate …. … Then devices can simply specify the PROPER BATTERY to buy and install safely!! I love the 18650’s, great batteries, BUT THIS IS ONE OF THE STUPIDEST THINGS I HAVE EVER SEEN IN THE ELECTRONICS INDUSTRY.

[@jack-ch5lr]

Dream on....

[@rheung3]

excellent explanation

[@kwaskowaty]

Ok - video starts with explanation of the name - all I need to respect and subscribe!

[@kenadams3951]

Thanks that was good Information

[@eamonquinlan8001]

Great video! Is there a way to tell by looking at the battery if it has the protective circuit built in?

[@TheTenergybattery]

Typically with a Tenergy battery you'll see an extra ridge at the bottom of the battery, otherwise it's best check with the battery's manufacturer. If it's a Tenergy 18650 battery please reach out to us at [e-mail] with a photo and we can help confirm.

[@andybacohonestly104]

thanks, great video, took me from knowing nothing about these batteries to having pretty good overall understanding. Perhaps beyond the scope of an introductory video but I would be interested in how to link the batteries and use them in devices that need higher voltage than 3.6V.

[@lapicker1010]

An issue that you didn’t address is that often button top batteries don’t give specs on the output. My flashlight will ONLY run on a high output button top. I’ve bought a number of 18650 which didn’t have a high enough output to give me turbo mode. VERY frustrating!!

[@StudioGalvan]

Pertinent Info delivered efficiently & professionally. 👍🏼

[@williammccarthy4036]

How do you check remaining charge in a 18650. I have a multimeter, and can see a voltage of 3.7 or so. But how do you determine how close you are to the voltage dropping enough to stop working?

[@TheTenergybattery]

For Li-ion batteries, when the voltage gets around 2.8-3.0V, the batteries need to be recharged.

[@vexy1987]

Hi, can you determine the % capacity remaining from the voltage? If the range is say 3.7 to 2.8, is half way between 50% depleted, or is it non-linear?

[@TechHowden]

@@vexy1987 it’s mostly linear and 3.7 is ~50%

[@Jacovangenderen]

How can I test its capacity? And where could I buy the battery’s cheap but not fake mah ratings ?

[@OXP-r4k]

what if i am connecting it to a device that already has a BMS in place, can i use bare cell or still need one with pcb?

[@Dex01-Z_WingZero]

Thanks for the information 👍

[@ElElectrico1]

One question is there anyway the lithium oin battery's still good cuz of the bms being fried and it made all the batteries to .013 percent now ? Do you know if u think i can save them batterys ? There still good no physical damage to the batterys

[@georgezibra]

Hello, i was waiting to hear the difference of batteries 3,7 & 3,6 and their charge differential states, can they be charged from same charge or will they need different charger? will it be dangerous or not? Thank you!

[@adeyemibabatunde1814]

@Tenergy Official Thanks for the video. At 2.17, you showed table for maximum discharge current. How long can these batteries supply maximum current safely in seconds? What are the maximum safe continous current for these batteries? Thanks

[@TheTenergybattery]

Hi Adeyemi, the chart outlines the max discharge current for each battery, these are safe levels. To find the runtime at this rate, you can divide the max discharge rate by the batteries' capacity. The chart already outlines the safe max discharge current for each battery. If you have more questions feel free to reach out to us at [e-mail].

[@adeyemibabatunde1814]

@@TheTenergybattery If a battery has 2600mah and 5.2A as maximum current. Duration (assuming 100%discharge)=2.6AHr/5.2A=0.5Hr=30minutes. This may not be practically correct as the battery may not be able to supply 5.2A continuously

[@Flash1857]

New into devices with 18650 batteries, thanks

[@Lawrence_Krystle]

It's so hard to find a Legit 18650, and the most legit ones I've seen are like 50x the cost of the fake ones. I've seen some cheap ones that may actually be legit like Samsung INRs

[@TechHowden]

If you don’t want to pay for new ones you can salvage them from old laptop battery packs and they usually work pretty well

[@michaeldhondt368]

Try at a vape shop they typically sell them for about $10 each and always are legit

[@iAussieGuy]

I had to look far to find one on eBay 😅So worth it though if you can find 'em. Pretty nifty piece of tech

[@AlcoveShadow]

Panasonic / Sanyo (red sleeve) 18650 and 20700 cells are legit.

[@Machria23]

Worse, they almost ALL mis-labeled! I have one in front of me now, that says it is “2.55ah @ 26v” Lol And it is not just missing the dot for 2.6v, because that would not make sense either, they are suppsed to be 3.6-3.7 volts.

[@Jesusandbible]

Wow! Great! Thanks! So intelligently put together and diligently researched! and pertinent. Thanks again!

[@Vindex0]

Thanks for the great explaining video

[@gBuckKOM]

Really great explanation video 👍

[@stefanwesterberg5319]

Great informative video! 👍

[@siegfried7469]

Thank you. Very helpful and informative video

[@user-br9nd1zq4o]

Can I leave the battery in my flashlight and charge through the flashlight or I need a battery charger?

[@edwardenglish6919]

Please recommend a small solar charger, headlamp, and small flashlight for backpacking.

[@GreyRockOne]

Thanks for the detailed info, my issue is I need a 18650 flat top that has both terminals on the same end, it's for my Slyde King first GEN flashlight. I'm having GREAT difficulty locating a replacement. Any thoughts? Thanks!

[@fivemeg2]

. Those batteries are special order for device maker. . If nobody make mentioned cell, you may make them yourself. . What is dimension of that cell?

[@GreyRockOne]

@@fivemeg2 it's the 18650 series with both "+" and "-" on one end,

[@GreyRockOne]

@@fivemeg2 Hi, it's the 18650 variety, it has both terminals at one end. A website called "Barebones" has one, a good price too, but their shipping is almost $25 for a barely 6-ounce battery via UPS, that is ludicrous.

[@johnussss]

Why anything over 1000mah is not simply marker in AH is odd, 2600mah is 2.6AH

[@fussybugger]

Thanks for the helpful Vid. A question, I have cheap Ebay head torches that came with Cheap 18650 rechargeables. If I were to replace with better quality 18650s shoud I still use the Torch's inbuilt charger to charge the new 18650s?

[@TheTenergybattery]

Hi Fussybugger, the charger should work fine if the new battery is the same chemistry and voltage. If you're unsure, please contact the battery manufacturer to confirm the battery's charging characteristics. If it's a Tenergy battery, please reach out to our team at [e-mail] and we can help confirm compatibility.

[@zeidoon2001]

what material is the tabs made of. the negative and positive tabs.

[@Realicetjay]

Can I use the normal 18650 batteries on diy Powerbank Case

[@nowthenad3286]

If it is 18 x 65 mm then what is the 0 for?

[@onlyfirekills]

0 means cylinder, reference to the shape.

[@MykeHawke-r9r]

Salutations, and greetings as well sir thank you for this video

[@lewisgardner1660]

I have just got a 1000 lumen torch that has a LX-BAT-2600mah (LGlhon battery) could I use a visvic li-ion 5200 Mah battery in it?

[@ksk5517]

Excellent video. Thank you.

[@prayag1192]

I have a power bank which is not working right now..i opened it so there are 3 batteries ( XHK18650 19C25-A1 3.7V) AS Per device configuration capacity : 6000mAh (22.2Wh). if i want to replace the same with new one so which one i need to take. can you suggest ??

[@Toddscomp2]

you did even mention the 18650 the has both positive and negative terminal on the same side

[@gts5930]

Thank you, great video!

[@Engineer_Jonas]

it can charge to solar power?

[@user-mg3qi1wm1c]

Can I charge li-ion batteries with pcb using tp4056 it will safely than batteries without pcb , specially I built home emergency lights

[@ianw0708]

I have a Aiwit v5 video doorbell. Any idea what best batteries / specification I need?

[@TheTenergybattery]

Hi Ian, please reach out to our team at [e-mail] with photos of your current battery, and we can help you match it with a replacement.

[@shinigamiryuk5315]

I bought new 18650 flat head batteries for my flashlight but on the picture of how the batteries go on the flash light the batteries have nipples. Does this matter? Cuz it don't work with flat head

[@klacy5555]

If a button top is slightly taller than a flattop, why are the both 18650?

[@fivemeg2]

. 18 stands for: APPROXIMATELY 18mm diameter. . 65 stands for: APPROXIMATELY 65mm length. . 0 stands for: Cylindrical cell. . You may see protected button top 18650 with 18.6mm diameter and 70mm length.

[@davidsailo4802]

Very informative.

[@khetebhaloporomanno]

I have a mosquito swatter that uses a 1200 mAh 18650 and deploys 6 UV LEDs for an Automatic mode that drains the battery approximately in 30 minutes. Hence one has to keep an USB charger connected to it for a continuous duty (say, overnight) in the Automatic (UV) mode. The battery is intended to be charged with a 5V, 1A DC input. Can Fast Charger ruin such batteries? Can I use any multiport USB wall charger that outputs 1A as charging current for this device? Does a 2A charging current harm the battery?

[@AstridBurkle]

How long does it take to charge a 18650 lithium battery?

[@KoolFace.]

i think around 1 hour and 30 mins or 4 hours

[@sharymens8187]

thanks!

[@petergillen9181]

PCB stands for printed circuit board not protective circuit board.

[@Machria23]

Yes, but he is explaining that the PCB is an added “protective circuit board” to the battery, which it is. Coincidence that they are both pcb. 😉

[@dannypgrizzle]

Good video, but I am still tortured trying to buy replacement cells for my camera gimbal. The factory batteries are garbage and don't last, but the fit is critical and everything I have ordered online is a hair too short to fit. The factory batteries are flat top, but the flat top protrudes and the batteries stack inside the handle. Everything I buy seems the same length, but falls out of the gimbal's handle, which is side loading, not end loading like a flashlight.

[@TheTenergybattery]

HI Danny, if you like you, can reach out to our team at [e-mail] and we'd be happy to take a look at which 18650 battery would be a better fit your device.

[@Footielad]

Can you get a higher capacity?

[@Lee-haw]

Thanks 👍

[@joeshmo7978]

What about 4200 mah? 4.2 volt li lion what can i substitute? Since i cant find one anywhere.

[@TheTenergybattery]

Hi Joe Shmo, please reach out to our team at [e-mail] and we can help you find a compatible battery.

[@karanzaberni]

Is it normal for the battery to feel slightly warm when charging? For example, I have Sony VTC6 3000mAh 18650 batteries being charged with a Liitokala Lii-600 charger, and the charging current is set to 2.5A. The batteries feel slightly warm during charging, and this happens with all the authentic Sony VTC6 batteries I have (10 batteries). Is this normal? What is the normal temperature during charging?

[@TheTenergybattery]

Greetings Karanzaberni, it's normal for batteries to get warm while charging. For your Sony VTC6 18650 battery, it can reach 140°F during charging and still be within normal range (we suggest confirming with Sony for the battery's specifications).

[@karanzaberni]

@@TheTenergybattery Well, at least now I know that my battery and charger are still good. If I don't know the standard temperature for charging, it could potentially shorten the battery's lifespan or even damage it quickly.,

[@HarryPooter541]

Woah. Thank you!

[@themyname010101]

Okay, but doesn't flashlights have their own protection against temperature and low voltage?

[@civilizedagesabers]

Are there any 3000 mah that are smaller sized than the 18650?

[@digginggopher]

I don't think so, 14500 is the same sized as AA batteries, but they are usually only 900mAh

[@joeybennett5120]

What's the minimum voltage for a 3400 mAh battery that's considered fully discharged?

[@TheTenergybattery]

Hi Joey. Typically 2.8-3.0V, but there are exceptions, so the best thing is to check with the cell's manufacturer to confirm your specific battery's minimum voltage.

[@joeybennett5120]

@@TheTenergybattery thank you for your reply. The discharge protection circuit is set to 2.5 volts on my Nitecore "NL1834" 3400mAh battery. Is it SAFE for the battery to discharge to 2.5 volts without it harshly effecting battery life?

[@catherineharris4746]

Nice👏👏👍👍👍

[@sammof7939]

tell me how manufacture's can cram 9900mah in the same container as a 3400mah those are fake 18650 and the weight on 9900 mah(34g) is lower than 3400mah(46g)

[@michaeldhondt368]

They cannot no 18650 battery can be over 3400mah and no battery can have a higher cdr than 30a

[@michaeldhondt368]

The ones that say 9900mah are typically fakes with a very low cdr and a capacity less than 2000mah you get what you pay for most of the time

[@skeeterbug9875]

Bravo, very good info but it is still tough to determine the differences in the what you call PCB cell versions (BMS internal circuitry) to those without. We are still in the Wild West when it comes to specs and capacity is a gamble with so much exaggeration. You almost have to get sample cells and test them for capacity. I got off on the 26650 cells and find that most have less capacity than the 18650 cells plus the Hype about capacity say that some are 12,000 mAh when they are ! 1000 mAh. Are there vendors that fully states the true capacities and whether they are raw cells or PCB type cells? Thank You.

[@danielcardinale4562]

So the ones marketed as having 9900mah are? Bogus? Inflated? If the max is 3500mah,how can they have 9900mah?

[@isaiahhesslup8463]

Blessing

[@Sir-Kay]

Everybody put emphasis on only one thing: capacity in mAh as if it's all that matters, smh. There are low drain devices and high drain ones, those two factors will determine what battery is right for you, bigger mAh doesn't always mean all as higher mAh ratings usually come at a cost of CDR continuous discharge current compared to the lower mAh ones.

[@marionavarro8229]

"PCB" 😂😂😂 3:00

[@Sva010]

Most button top has pcb?

[@gloriouschannel3683]

Wait what!? The bigger ones are safer then the flat ones?? I tought the flat ones had a fuse for safety and the tall ones had nothing.

[@TheTenergybattery]

That's right. Generally button top 18560 batteries will include a protection circuit board with them, whereas flat top 18650 batteries are used for battery pack making and the PCB can be added to the battery pack.

[@ourv9603]

HEREs what I dont understand. I have several trailcams and every single one of them from ANY Mfg used 4 or 8 or 12 AA batteries. Most 8. Has the trailcam industry NOT discovered the 18650? It has been around for HOW LONG? I have a label maker which used 6 AAA. Today I bought a 2-18650 holder which I will wire to the battery terminals and run my label maker off 18650s. Jeeeeeeeeeez... Get with the program already. !

[@jihedmedini1318]

Nice

[@Jason-Smith1]

Good

[@IILEERGuangzhou]

yeah good

[@biaocao-u5f]

hi sir I have samsung LG battery

[@honahwikeepa2115]

Found a broken Hoverboard in the park. Only 4 batteries were damaged. The rest were full charge.

[@CherBird-r7g]

Stoltenberg Lane

[@fivemeg2]

. You forgot to say: . 18 stands for: APPROXIMATELY 18mm diameter. . 65 stands for: APPROXIMATELY 65mm length. . 0 stands for: Cylindrical cell. .

[@CaptainSwoop]

NO MUSIC PLEASE !!!!!!!!!

[@Dartheomus]

There's a million 18650 batteries on Amazon, and none tell you the max discharge current. Sigh

[@ourv9603]

I am watching this vid so as to NOT get suckered into buying batteries with fake Ah ratings. AMZ is just full of vendors offering 18650s with 9800Ah or 6600Ah and like that. I read somewhere that the 18650 is physically not capable of making more than 3500Ah. !

[@fivemeg2]

. That is true and when you see 18650 advertised with more than 3600mAh capacity, just don't buy. It's fake. .

[@goosegog]

That wasn't all I need to know

[@notsogreat123]

Yeah let's talk about fake power rating on Chinese 18650 batteries !!

[@thenamesnick123]

This was actually helpful as fuck!! Thank you

[@bangdollarsign]

More videos like this plz!!! Sub'd

[@tanker242]

Did he just say protection circuit board? Lol

[@jeremyholden9159]

i know im just being a hater, but honestly I had flashbacks of having to watch a class full of 3rd graders read their book reports watching this. Buddy is reading this script like hes at the science fair.

[@repairman2be250]

Tested 10 cells (18650) have a capacity between 1500 - 1700mAh out of the advertised 3500mAh. Underwhelming product claimed as being Original 18650 HG2 3500mAh - brown sleeved. _A v o i d: ->Sh op1103577373 Sto re

[@AdamskiSmith]

Thankyou very much for this video. Really informative and well done.