DIY Laptop PowerBank (battery pack to charge your laptop on the go)

$2 for PCB Prototype & 24 Hour Quick Turn: jlcpcb.com
Previous video: • Random/Unscripted Q&A ...
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Twitter: / greatscottlab
Support me for more videos: www.patreon.com/GreatScott?ty=h
More project information (wiring schematic, pictures, ....) on Instructables: www.instructables.com/id/DIY-...
Parts list (incomplete, see Instructables for more, affiliate links):
Aliexpress:
16x INR18650-25R Li-Ion Cell: s.click.aliexpress.com/e/_d6r...
1x BMS: s.click.aliexpress.com/e/_dXr...
1x LiPo Voltage Tester: s.click.aliexpress.com/e/_dUT...
1x Current/Voltage Monitor: s.click.aliexpress.com/e/_dY9...
1x Boost Converter: s.click.aliexpress.com/e/_d7p...
1x Buck Converter: s.click.aliexpress.com/e/_d9b...
2x DC Jack: s.click.aliexpress.com/e/_dXZ...
2x DC Jack Connector: s.click.aliexpress.com/e/_d8O...
3x SPDT Switch: s.click.aliexpress.com/e/_dYW...
Ebay:
16x INR18650-25R Li-Ion Cell: rover.ebay.com/rover/1/711-532...
1x BMS: rover.ebay.com/rover/1/711-532...
1x LiPo Voltage Tester: rover.ebay.com/rover/1/711-532...
1x Current/Voltage Monitor: rover.ebay.com/rover/1/711-532...
1x Boost Converter: -
1x Buck Converter: rover.ebay.com/rover/1/711-532...
2x DC Jack: rover.ebay.com/rover/1/711-532...
2x DC Jack Connector: rover.ebay.com/rover/1/711-532...
3x SPDT Switch: rover.ebay.com/rover/1/711-532...
In this project I will show you how to create a Laptop PowerBank. It mainly consists of a Li-Ion battery pack and one buck and boost converter. This way the PowerBank can get charged up through the Laptop power supply and aftewards charge up the Laptop directly to give it an additional run time of 3 hours. Let's get started!
Websites which were shown during the video:
www.ti.com/lit/ds/slusak9/slus...
www.ti.com/lit/ds/symlink/tps...
drive.google.com/file/d/0B5ce...
Thanks to JLCPCB for sponsoring this video
Visit jlcpcb.com to get professional PCBs for low prices
Music:
2011 Lookalike by Bartlebeats
Killing Time, Kevin MacLeod
(incompetech.com)

[@Deveron4]

You have the greatest, longest running sponsorship of all time

[@greatscottlab]

Haha thanks. I am happy working with them as well :-)

[@itzmrdub4591]

Juan JLC PCB

[@83hjf]

jlcpcb contacted me too. i've been lazy for my other channel. they pay $80 a vid... hard to say no

[@MrHuno92]

I mean... its a perfect fit.. since home tinkerers get cheap PCB's and Scott gets $.

[@DracoRemixer]

It's even longer than LTT & Tunnelbear *sad Pikachu*

[@208414]

Your builds are getting more professional looking with each subsequent project. Keep up the great work!

[@TheDevoutTrout]

I asked for a video like this over a year ago in a pm to you, I was politely told if I did everything people wanted I’d never get my own projects done. Still happy to see it

[@fedeMCTV]

This is my favourite video of all yours, it's right what i ever wanted to do, and at the moment i wanted to. Thank You Greatscott

[@TheIceLeopard]

Next Video should be for a desktop computer for power outages. UPS (Uninterrupted Power Supply) Include a low battery system to inform the desktop to start shutting down to prevent damage of a sudden power cut.

[@greatscottlab]

I will not make a mains voltage UPS

[@TheIceLeopard]

@@greatscottlab Ahhhh... I was really looking forward to a DIY or BUY of that. May I ask why not?

[@rolandmeiner4970]

Too dangerous obviously

[@danielhorne6042]

you could use an atx converter plug that converts 12 or 19v to 3-5-12 then wire it to a battery then wire a charger to it so it keeps charging then when you have a power outage the battery continues to power the pc . but the issue is if its a gaming pc then the atx psu module wont handle it im not sure what they are called but its the 24pin motherboard power block where you get in an itx pc what can run off 12v batteries .

[@sniff122plays]

@@greatscottlab That will be a 230v inverter and there is a previous video on making a modified square wave and spwm inverters

[@m4gmu5hell]

Congratulations to 1 Million Subs! Its so great that my favorite Electronic KZbinr I i know from the start all the way to 1 Million ^^ Great Job Great Scott!

[@greatscottlab]

Thank you :-)

[@youtubetears8732]

I Totally Agree

[@EgonSorensen]

Looking forward to your drone projects :-) Congrats!

[@TheIceLeopard]

I feel that was LONG over due.

[@BenCos2018]

I agree also👍☺ great video by the way☺

[@TrentTationnaiseXization]

The quality of your work makes my heart warm.

[@robinhaugan762]

Omg GreatScott! u have exploded! last time I watched you, you only hadd 1k subs! Congrats! Keep up your good work and keep inspiring young humans!

[@welix94]

Keep in mind that this might not be always that easy. Some Laptops communicate with the power adapter to find out the specs and adjust power consumption respectively. I tried powering my Dell with an off brand power supply that doesn't have this feature and my Laptop acted weird: Processor stayed in it's lowest power state, it wouldn't use it's dedicated graphics card and battery was not charging. Everything was slow and choppy. As soon as I disconnected that power supply (making it run on battery) everything was fine. Also when I reconnected the original power supply it worked properly. So your mileage may vary. Good video though!

[@toqeerahmed3016]

Battery charging problem was because of a missing sensor that is used in dell laptop's adapter i have made similar power bank for my dell laptop firstly laptop turns on but not charging battery afterwards i get that sensor from a burnt dell charger now my its charging my laptop battery too.

[@bardenegri21]

Same problem with my Dell laptop, it's a Dell thing mostly.

[@jeffgrant935]

This might help explain it for you: hackaday.com/2014/03/03/hacking-dell-laptop-charger-identification/

[@welix94]

@@jeffgrant935 Thanks!

[@UberAlphaSirus]

Cos dell are dicks. The psu has chip that tells the bios it ligit. If the bit built in the laptops bios is broke, even a legit dell chargers wont work.

[@northshorepx]

congratulations on 1 million subs. Well deserved achievement. And so much info in this excellent project.

[@ESCcrasci]

Congratulations! You've reached one of the best achievements on YT. Best of luck. Stay safe and have fun!

[@bryanmengwasser3925]

I made something like this last year for my school laptop. It was a 6s2p 18650 pack with a cheap low voltage cut off switch before going to a cheap buck boost converter. I hacked up a CAD model for the enclosure and 3D printed it. I use 2 old 16 amp Xbox 360 PS in series to charge it through an XT60 connector(even though it undercharges the pack by about a volt or two). It’s neat to see some other ideas regarding a setup like this, and congrats on one million subs!

[@aitchpea6011]

Great build, thanks for sharing! At a company I once worked for, we used to use laptop battery power packs for a product we built for members of the security services working in airports. I can't say what the work was or much about the product, because military secrets, but the laptop (and other, erm, electronics) was housed in a modified Samsonite briefcase which was then suspended in a Samsonite suitcase (don't ask, I just said I can't tell you). Long story short, the power pack was heavier than the laptop and cost nearly twice as much, but guaranteed a good (but unspecified) number of hours of continuous use, doing, erm, things that require power.

[@mj2068]

wow, what a fantastic tutorial. not only it served its main educational purpose well, it's very practical, beginner friendly, and along the way, it solved a very common power shortage problem. and not to say, we can easily modify the project to better fit our own personalized needs, like larger capacity or smaller profile, and i assume it wouldn't be so hard to add extra couple of usb outputs to charge other devices, like phones, etc... anyway, great project all around, thanks, Scott.

[@hurtadoa1]

I love how creative you are with everything electronic. each of your videos have something unique of you which is you write down important aspects and that always stands out to me. you make everything seem so easy fun and even entertaining I really enjoy that from you please continue to do that. you are amazing at what you do.

[@MarionMakarewicz]

Congrats on the 1,000,000 subs. You worked hard to get them. Thanks for all your excellent work.

[@Wheel333]

Sir you are an inspiration ❤️❤️❤️

[@apulanto]

Glückwunsch zu 1 Million Subs. Mach weiter so :)

[@samtechpro]

Your content is always inspiring and i can understand your huge efforts in creating a video. Stay blessed my bro.

[@gurkanakagac9385]

I want to say that you are best and the best and the best channel in KZbin.Your production is so professional and satisfactory.Thanks so much.

[@FilipeAlves]

Excellent work once again. Just a tip: you could add a few USB ports just for charge any additional devices on the go, without carrying another powerbank.

[@aidanfransen3571]

I think its important to note the output of the buck and boost converters are not temperature stable so you could potentially damage something under extreme temperature

[@user-cw9co7jm1o]

Wow... what a progress I remember seeing you reach 100k subscribers and uploading the fireworks video to celebrate it, can't wait to see what the 1 mil video will be about! Great to see you hit this milestone. Keep it up!

[@Watchyn_Yarwood]

Thank you for the parts list/links! Congrats on 1M subs!

[@JasonHoningford]

Airport security loves these homemade things!

[@TheWebstaff]

144 Wh pack.. guess you won't be taking it on a plane then?!

[@greatscottlab]

What is the limit?

[@Eman2000]

@@greatscottlab I believe it's 100Wh

[@bardenegri21]

They will look at you veeeery weird if you try to bring a powerbank that does not look commercial regardless of size. Or any other 3d printed box full of wires and displays. Personal experience.

[@saykatchakrapani8787]

should not be above 100Wh per battery, and that too need to be taken in carry-on bag

[@JamesPotts]

@@bardenegri21 I've taken some pretty weird projects on flights. I tell them up-front what it is. It usually spends some extra time in the X-ray, but that's all. My wire strippers, on the other hand, were confiscated because the handles were too long.

[@TrollFaceTheMan]

Congratulations on 1 mil!

[@jafinch78]

Congrats on the Million subscribers! This pack is a good idea for off the grid apps and for less noise emission. Can even connect with the solar panels (or other system) if specs match up. I wonder like Elvin Haak noted... if trimming the pack buck converter 0.1V below the charging voltage will work better and the laptop will still use automatically when the internal battery is too low.

[@NonnofYobiznes]

Bro, I love your vids, but I often start with "Ok, maybe this time I can do it, I CAN DO IT!"... just to sadly realize many of your tuts are almost past the level of intermediate. Half way I just stop watching. In this case, it sounds like you're making a pack *SPECIFICALLY FOR THAT LAPTOP MODEL SPECS* Nice vid though.

[@steveroberts1861]

Great project !

[@nicasionicklaus4142]

Your circuit analysis skills are very impressive!

[@marcosopeth4987]

Yours videos as Always.. are awesome! clear english helps to understand almost everything, combined with very explained Project! Best eletronic channel on youtube!

[@carlotheatheist]

Everybody gangsta. Until the laptop itself running outside the house. Its a e bike battery pack. Right?

[@charlie_nolan]

In the future could you make a video about how to make a battery backup for an ATX power supply on a desktop computer?

[@vinylmodsmanitoba]

Just add an AC inverter on the output of the battery. But it would waste less power converting from AC to DC, if you just added the modual power supply connectors on the battery bank itself.

[@lucappelman8558]

Absolutely love this video, was looking a long time for a video this detailed! Even went on a forum where they basicly banned me because they thought what is wanted to build was to dangerous...🙄

[@mehdialikermally]

Du bist ein toller mensch!!! Honestly you have a gift for explaining this stuff and I swear you're psychic, because I have been hoping you'd make a video JUST like this. Thank you and I wish you the best of success 💪

[@2000YG]

i just bought a second battery to switch, when my first on is depleted.

[@llspragulus]

I’d like to see a DIY or Buy version of this :)

[@RaduTek]

If your laptop has USB-C you just need a commercial powerbank with USB-C Power Delivery (PD) support and enough output voltage (usually 12 or 15 volts). Keep in mind that still some laptops don't support charging over USB-C.

[@alexejgossen6994]

YES!!! i have been toying around with this idea already for 2 years, and you do it!!! though my idea was way less fancy congratulations to 1 milion subs :-)

[@mr.o4588]

As always, great Video! Thank you Scott! It's allways a pleasure watching your viedeos!

[@elvinhaak]

Nice project. But why charging a battery with a battery? It is a bit waste of energy. I found out that at a slightly lower voltage most of my laptops do work fine but don't charge. Just put the buck-converter a little lower and you have it. Thus you can have a longer runtime on the external pack while keeping your internal battery full. I only had to drop it by 0.1 Volt below charging-voltage to archieve this. Second good thing is that the I is getting lower too so there is less heat in the converter and external battery which gives an even longer running time.

[@f.a.i9638]

......May I answer...this....first thing.. Well maybe I want to simply have more energy on the go....even tho if he only made it for his Laptop you know..coulda just bought another battery...

[@MrGordane]

You can also plug your power bank when your battery is full, this way you'll consume only what the laptop needs, and when your power bank is flat, you still have your full laptop battery.

[@jafinch78]

Good idea finding the below charging voltage. I'll have to look into that. Surprised I've not seen someone hack a pack into a huge portable docking station size battery pack. That would be something different.

[@SuprSi]

@@jafinch78 Back when I was a poor college student I had an old siemens laptop that ran perfectly happily directly off of a 7Ah lead acid battery lol. Didn't charge but I didn't want it to, so worked out pretty perfect. I used to get some odd looks though haha

[@jafinch78]

@@SuprSi You're motivating me to look for either a T42 or X200 docking station and try what I mentioned above out to make a docking station battery pack. Might even be able to 3D print also... I'm not sure about thermal issues though. The pricing isn't too bad building the hypothetical pack out of protected TP4056's, or maybe even I see cheap 2S modules cost effective, ganged together. I'll have to read into hacking into the existing battery packs protection circuit and plug specifications and see if I can find and old not working pack for connector with pins.

[@user-pv4cw3du2p]

so.. whats the cost of all of this?

[@hsb14214]

CONGRATS ON 1 MILLION! YOU ARE THE GREATEST ELECTRONICS CHANNEL ON KZbin+

[@erygion]

Great video as always :) congrats on the million subs, there will be more! Keep up the good work.

[@shariqzaman2834]

Great Project..! Can you please make a DIY BMS ?

[@JakubPyrachewsky]

Oh yea

[@auszeit1772]

That would bei awesome! With current limit function for charging and discharging too.

[@melkiorwiseman5234]

I seem to recall seeing a video where he tried that, but in the end he concluded that the Chinese can still do it cheaper and the only reason for making your own is if you either want to charge an odd number of cells or to charge them at a much higher charge rate than supported by the Chinese BMS circuits.

[@blubb7711]

Das ist natürlich der komplizierte deutsche Weg um dieses Problem zu lösen. Alle anderen Menschen hätten sich einfach ein zweiten Akku gekauft.

[@jan.feucht]

Overengineering Kann man bei viel neuen nicht geschwind wechseln

[@blubb7711]

@@jan.feucht stimmt, aber bei seinem ja schon :D

[@smow7422]

Overengineering nach diesem Kommentar habe ich gesucht. Danke 😂

[@lyqide8123]

Natürlich 😂😂

[@antoineroquentin2297]

it's funny because your name is overengineering

[@zhangluis1880]

My favorite electronic project channel on KZbin！

[@anooshamoodley4835]

Congrats on 1 mil

[@MsArion246]

Is it possible to use a nitro engine as a power supply? Btw, congratulations on one million subs :3

[@pmgodfrey]

You could...tad expensive though. JohnnyQ90 does that to nearly everything. :) kzbin.infovideos

[@yatharthagarwal2041]

One small question how much does the power bank weight??

[@claritoresdiano1021]

1.5 KG

[@White000Crow]

I’ve been thinking about making one the last couple weeks. Thank you!

[@stickz9871]

Congratulations,(on a million) you are the best youtuber.

[@TRMrStone]

It's interesting how many german YTer make national content :]

[@TrollFaceTheMan]

Joerg?

[@TRMrStone]

@@TrollFaceTheMan Jorge?

[@TrollFaceTheMan]

@@TRMrStone, Jörg Sprave from the slingshot channel is what I meant.

[@TRMrStone]

@@TrollFaceTheMan Hm, don't know who he is 🤔 :[

[@TrollFaceTheMan]

@@TRMrStone, German that does primarily English content. He runs "the slighshot channel." Go on there and he'll "Show you it's features..."

[@edg6779]

That benchmark is kinda flawed, you need to have GPU and CPU at full usage in order to get real numbers, I would have used Cinebench and FurMark

[@Ziplock9000]

Exactly. You also need to have the HDD spinning, the display on full brightness, CD/DVD/BR spinning and the internal battery being charged.

[@StevenRyan54]

+ play song with full volume, set display brightness to maximum, shorted out the usb port with resistor (draw a current to maximum), copying proses to make sure hdd is spinning in maximum rpm, burn a disc cd/dvd with maximum speed. anyone else?

[@beachboardfan9544]

WOoo love those wago connectors! Never saw clear ones before, my work always get the gray and orange ones.

[@davidcain3752]

The simple yet effective flex with the OP battery pack

[@MCsCreations]

Hey, shouldn't have you created the teleportation technology already? Beam me up, Scotty!

[@xXTrickLeagueXx]

7:52 I hope you mean 3.2v. 3v is way to low for any li-ion cell

[@greatscottlab]

No, 3V. Look in the datasheet of the cell.

[@sortofsmarter]

according to battery university " Lead acid discharges to 1.75V/cell; nickel-based system to 1.0V/cell; and most Li-ion to 3.0V/cell. At this level, roughly 95 percent of the energy is spent". batteryuniversity.com/learn/article/discharge_methods...... Depending on the battery chemistry

[@jaroslavstava3704]

@@greatscottlab He's mostly correct. What is actually the important value is storage voltage, below cca 3.3 V will result in degradation, 3.4 - 3.6 is better for storage. I can't open the datasheet now, but I'm sure it doesn't say that storing the cell at 3.0V is recommended. Short discharge so low won't hurt it, but it should be charged to storage voltage asap. Why damage your battery for 5% of capacity.

[@jaroslavstava3704]

@@sortofsmarter Depends on the discharge rate, lookup some graphs. For sub 1C discharge rate you should reach 95% around 3.2V.

[@mashedpotatoes5323]

@@jaroslavstava3704 I thought the storage voltage was specifically 3.82 volts?

[@lalchandra4590]

Congrats Great Scott for 1 M subscriber

[@zaadbaad541]

I don’t even know what your doing but I can’t stop watching!

[@gamingtechtamil69]

Can you make a pure sine wave inverter using 4017ic and ne555 ic

[@greatscottlab]

I can put it on my to do list

[@Veritas-invenitur]

@@greatscottlab That would be awesome!

[@gamingtechtamil69]

@@greatscottlab thanks scott iam your big fan

[@gamingtechtamil69]

@@AmitabhAnkur yes

[@gamingtechtamil69]

Please put a heart to my comment

[@richardcreese]

Add a USB socket so you can also change a mobile phone.

[@Thomas_P_aus_M]

Many (newer) notebooks can also do this job.

[@johnfrancisdoe1563]

Richard Creese That would require a different buck converter with his module bundling approach.

[@elgs1980]

Oh my God! You are so knowledgeable and what you have done in this video is so satisfying.

[@metraforce441]

Congrats for your 1 million subs! I was your 500K sub :)

[@TheWebstaff]

Why not buy a cheap battery and just 3d print a new case and make a 3s many parallel pack?

[@armatonix]

Lol its diy not what you need to buy

[@benbaselet2026]

Why would he go buying more batteries when he already had a suitable spare one?

[@eduardoavila646]

It lacks the cricuitry wich communicates with the laptop and that charges and balances the cells. You will neve be able to "make" a battery. And add that to the fact that many newer gaming laptops and even normal consumer laptops won't have removable batteries anymore, it makes your option impossible in every way

[@mwbgaming28]

@@eduardoavila646 i still dont understand why removable batteries have disappeared i see no benefit in turning the device into an expensive paperweight when the battery dies (vs bringing a few spares with you and swapping them out as needed)

[@eduardoavila646]

@@mwbgaming28 Well, in the user side: 1- Thinner devices 2- Water resistant devices (Both are absolute bullshit to me) a galaxy s5 for example breaks this water resistant mith. Thinner devices are a stupid idea, what does worth have a paper thin device that is only a bad paperweight? In the company side: 1- Hard repair, users cant thinker with the device to make it better or repair it, so it makes higher sales. 2- Devices last less, only last now the battery life, before you would replace it. So no need to sell and manufacture so much spare parts. 3- Cheaper to manufacture devices, without having to put a dedicated battery slot/place, and a battery shape wont need to be standard. 4- They sell way more powerbanks and acessories. So yeah, it's pretty much a advantage to the companies, not to the consumers.

[@bas116677]

9:44 Wait... What?

[@kraio-sfu]

What do you mean?

[@DaNiKzz]

Congrats on 1 mil!!!!

[@danialhakim7222]

1 million subs! Congratulations and keep it up 👍👍👍 !!!!

[@satishgagneja9558]

Hello sir 👋 congratulations for 1m subscribers and what about drone videos do it fast

[@fireeraser2206]

Too much hazzle, my ThinkPad has ~11h screen-on time while using Chrome and supports changing the battery while being turned on (has an internal and external battery).

[@tristan6509]

Every laptop do that, you can charge the battery while using it

[@fireeraser2206]

@@tristan6509 Change, not charge.

[@tolga1cool]

Which model?

[@fireeraser2206]

@@tolga1cool T560 with low power parts.

[@tristan6509]

@@fireeraser2206 oh ok, mine can do that too, you can unplug the battery while charging and it will still be on, it's rare because most laptop nowadays doesn't even have replaceable batteries, my laptop is a Dell Inspiron 14 5459, but my old Sony Vaio and hp mini netbook also has that feature.

[@DryLog420]

This video was great, Scott. Nice build! :-D

[@gilbertjose3467]

Congrats sir 1M subscribers. Learning electronics lessons from Great Scott . thanks sir

[@youtubetears8732]

I'm a little Early cool powerbavk

[@user-bd2bk3kc7k]

Really cool powerbavk

[@watermelon9588]

@@user-bd2bk3kc7k yeah really cool powebank

[@nmrdkl]

Avira is not that good

[@TheJay6621]

But it is German.

[@ddcddc_]

Congrats for the 1Million milestone! Also i noticed that every week your outro gets higher in pitch. Remember that ~20kHz is the upper bound of the audible spectrum🤣

[@mradaChris]

I enjoyed this! thanks for the link to that buck converter. I tried to build one myself but it took some re-engineering to make it work.

[@henri1056]

1million subs please make a German vid

[@greatscottlab]

Maybe some time this year......who knows....

[@walangid]

@@greatscottlab It'll be cool! If you do that, please add an English subtitle too

[@johnmiles5532]

@@greatscottlabneeed drone

[@davidjrb]

thank you for the high quality educational videos. they are a lot of fun. please keep them coming.

[@theniftylynx6897]

You make stuff better quality than some factories

[@ELUSSJL182]

awesome video and work my friend! you're the best electronic youtuber that show us everything with great detail. thanks!

[@itsmilan4069]

I like the industrial look of the battery pack

[@CJWarlock]

Supercool. And interesting. :) Nicely done video. I like the handwriting and color-marking details. It has become your style. Thanks for the video. Cheers!

[@Circuitoptimize23]

Congratulations 1M subscribers... ❤

[@mynameiszoro]

when you reached a million sub i was reloading the page a thousand times a second just to see that is says 1,000,000 subs XD, congratulations for a million subscribers and your video is Awesome as always, KEEP IT UP!

[@ronroberts110]

This is by far, your most useful video. I hope it gets millions of views.

[@ronroberts110]

Also, you should add a USB circuit, two USB sockets to the powerbank for charging smart phones.

[@71Serai]

Thats's a serious series Li Ion Power bank. Well done for preparing the video, this must have taken a serious amount of effort and time.

[@John-bb4wk]

Love this guy.... he just gets it done!!! I'm lost... but love watching!!

[@BloodyRainRang]

This is a very interesting project, even more so because it worked out well. I would however be interested in the dimensions and weight of the resulting powerbank, just as a rough measurement on how much it would add to the "bulk" of the laptop it's intended for while transporting it.

[@ImedSamti]

Great Project Scott

[@rainbowsixsiege_n_collegestuff]

This is so informative and tells much about how to do a project properly

[@MCsCreations]

Fantastic work, dude!!!

[@shamardaniel4819]

I so hoping someone was going to do a touch up on this!!!! CONGRATULATIONS 1 MIL AND COUNTING!!🎉🎊🎉🎉🎉🎊🎊🎊🎉🎊🎉

[@prescan7000]

Very neat project! Enjoyed watching this video. Thanks a lot!

[@jaiprakashmakhija4889]

Congratulations for 1 million

[@skater90255]

My xbox one power supply just took a dump. watching your video i learned some concepts i can use to fix my dying xbox power brick. Thanks!

[@shivangsingh8417]

Man, what a fantastic person this guy is!

[@KidCe.]

Very nice project and explanation as always :D One thing I found out when researching for diy li ion chargers is that you should try to keep the current ripple low, and these boost converters do a bit more of ripple than the Li-ion cells like. And how does your charging process end? Normally you cut of the charge if the charging current falls under a certain level.

[@JessicaFEREM]

Most newer laptops have a system built in where when you're not using a high-power application, it uses the iGPU instead of the dedicated. But i feel that they should harshly turn down the CPU clock as well and limit power draw even more

[@user-gv3nq5uv4h]

this project poped into my head a couple of days ago, you made it quite hard for me to match your method, though , given me a drive to try it my way,thanks,

[@ef5of7py1]

Please keep the work, you are my electronics teacher