How to Make the Ultimate 18650 Power Bank with Infinitely Expandable Capacity

In this video I will show you the ultimate solution to power on the go. This DIY power bank features a removable battery pack, which can be easily replaced, giving this power bank unlimited capacity as long as you have enough cells. The cost of the row components of this power bank is around 60 dollars, which is two times cheaper than anything commercially equivalent.
WARNING: Do everything at your own risk, lithium batteries can catch fire or explode if mishandled. This power bank requires a more than a basic understanding of electronic to complete.
Schematics and the script: drive.google.com/drive/folders/12qpkp2NuJ-EspMs0VmSUoi6NCD4o3lEM?usp=sharing
3D print and CAD files: grabcad.com/kralyn.3d-1/models
If you need a 3D printer, here is a really good one for only $220(Ender 3):
amzn.to/30QC9rj
If you like to see behind the scenes stuff support my channel, get frequent project updates, or chat with me, please consider joining my Patreon: www.patreon.com/KRALYN3D
Part links: (some are affiliate)
15x 18650 battery, if you are going to buy new, I recommend these:
www.alibaba.com/product-detail/20A-high-discharge-18650-2500mah-3_60842394272.html?spm=a2700.7724838.2017115.120.656b3c15t5pLHy
Or NCR18650B/BD www.alibaba.com/product-detail/Original-Japan-NCR18650B-3400mAh-3-7v_60482164381.html?spm=a2700.7724838.2017115.83.178268efmg9Mey
USB 12V quick charge:
eBay:www.ebay.com/itm/USB-Fast-Quick-CAR-Charger-Adapter-16W-5-9-12V-3-1A-for-Android-or-iPhone/143148815849?var=442095655563
Amazon: amzn.to/2KbJoE5
200W boost converter:
eBay:www.ebay.com/itm/200W-DC-DC-Boost-Converter-6-35V-to-6-55V-10A-Step-Up-Voltage-Charger-Power/222147971321
Amazon: amzn.to/2KdpvfW
12V Inverter 110V:
ebay:www.ebay.com/itm/150W-Power-Inverter-DC-12V-to-110V-Car-AC-Adapter-with-3-1A-two-USB-ports-US/112994629611
Amazon: amzn.to/2Wdduyy
12V inverter 220V: You might need to modify the io shield to fit the socket your country needs.
www.ebay.com/itm/150W-3-1A-Dual-USB-DC-12V-to-AC-110V-220V-Car-Power-Inverter-Converter-Adapters/352623955879?_trkparms=aid%3D111001%26algo%3DREC.SEED%26ao%3D1%26asc%3D20160811114145%26meid%3Dcf8c4bf3305d4bdcaaca140d5763b115%26pid%3D100667%26rk%3D3%26rkt%3D8%26sd%3D323813688587%26itm%3D352623955879&_trksid=p2045573.c100667.m2042
Wireless charging circuit:
eBay:www.ebay.com/itm/Practical-DIY-PCBA-Circuit-Board-Coil-Wireless-Charging-Qi-Wireless-Charger-USB/283387526814?var=584364033055
Amazon: amzn.to/2WAC9w2
DC-DC step down constant current:
eBay:www.ebay.com/itm/DC-Step-Down-Voltage-Constant-Current-Buck-Regulator-Battery-Charger-LED-Driver/191902394789
Amazon: amzn.to/2WfV93R
Mini DC step down:
eBay:www.ebay.com/itm/2pcs-Mini360-3A-DC-Voltage-Step-Down-Power-Converter-Buck-Module-3-3V-5V-9V-12V/382620018157
Amazon: amzn.to/2KipmI2
3s BMS with balance:
eBay:www.ebay.com/itm/3S-25A-protection-PCB-board-W-balance-BMS-for-18650-Li-ion-lithium-battery-H/153309641527
Amazon: amzn.to/2W9FRNU
12v 20A mini relay:
eBay:www.ebay.com/itm/SONGLE-10-pcs-Relay-5-Pin-SPDT-SRA-12VDC-CL-DC-12V-Coil-20A-Universal-PCB-N-K8L1/182546713277
Amazon: amzn.to/2Min8ev
Temperature switch (4x N.C. 45 degrees & 4x N.O. 45 degrees.)
eBay:www.ebay.com/itm/5pcs-40-160-C-Bimetal-Temperatur-e-Thermostat-Control-Switch-N-C-250V-5A-KSD9700/162152873403?var=461125914349
Amazon: amzn.to/2QwIhjt
Slide switches:
Amazon: amzn.to/2KaQnxe
eBay:www.ebay.com/itm/10PCS-4-7mm-2A-125V-SPDT-1P2T-2-Position-3-Pin-Slide-Switch-5mm-Shaft-Straight/192647303542?hash=item2cdaac9176:g:4mYAAOSwK1xbTGDZ
60x10mm fan:
Amazon: amzn.to/2WbIiiZ
eBay:www.ebay.com/itm/12V-DC-60mm-2Pin-60x60x10mm-CPU-Cooling-Computer-PC-Case-Cooler-6010-Fan-US/192490647474
USB C trigger: www.ebay.com/itm/Type-C-USB-C-PD2-0-3-0-to-DC-USB-fast-charge-trigger-Poll-detector-Charging/173725301413?hash=item2872d5baa5:m:mtQk2e9KiBozm3GpMOpgZzQ
RGB controller: www.ebay.com/itm/Mini-3-Key-Controller-Dimmer-Amplifier-For-RGB-3528-5050-5630-LED-Light-Strip/182695567707?hash=item2a8981215b:m:m8fh4a4fxff7sF5FI6SpQwg
Heatsinks:amzn.to/2ERkypP
XT 60, wires, and RGB strips are salvaged from old electronics.
Music used:
There It Is by ZAYFALL soundcloud.com/zayfallmusic
Music promoted by Audio Library kzbin.info/www/bejne/m2qmpZ2DlJesgck
Spite by ZAYFALL soundcloud.com/zayfallmusic
Creative Commons - Attribution 3.0 Unported - CC BY 3.0
creativecommons.org/licenses/b...
Music promoted by Audio Library kzbin.info/www/bejne/hn3aapqij894mLM
Parasail - Silent Partner (No Copyright Music)
kzbin.info/www/bejne/g6uyZa2cg7RjobM
Altro - Epic [NCN Release]
kzbin.info/www/bejne/hafIapSNndynd5o

[@sachiravihanga]

Lot of people posting their projects on KZbin but they don't public thier CAD files. If does, they required for money. You did a huge project which I can't imagine to do myself. And also you have publicate to others who like me to encourage. I cannot imagine during this project how much of time, money & failures you have faced. That was made me to thumbs up & subscribe your channel. You may have all our blessings to do more and more. Thank you so much.

[@JoeyLovesTrains]

r/ihadastroke ??

[@amosimo8527]

@@JoeyLovesTrains r/nothisfirstlanguage ??

[@Cinn07]

@@amosimo8527 r/subsifellfor

[@Cinn07]

John Chrysostom when doing big projects like these, there is bound to be roadblocks or something not going just right. There is no getting around it, no matter how good at electronics you are. If he managed to do this whole thing with nothing left to truoubleshoot, I would be beyond amazed.

[@sachiravihanga]

@John Chrysostom Every innovation projects are facing for bugs & issues. But with the patients, corrections some of them are achieving the goals successfully. Thats what I wanted to tell him & how thankful I am for this.

[@BritishJax]

dude you should make this a kickstarter, id back it for sure! Edit: not gunna say thanks or none of that mumbo jumbo but i will say im surprised to see how many others simply cant be arsed lol

[@tf3confirmedbuthv54]

saaame

[@FlechetteArchery]

was thinking the exact same thing when i saw this.

[@NightForce]

I'm in.. +1

[@BritishJax]

@@NightForce hell yes

[@BritishJax]

Lets make this guy have a happy retirement

[@esqueue]

I have completed this project and its great. Here are some corrections for anyone interested in building this. 3:11 It lists 2 Mini DC step down converters when most likely, only 1 will be needed. The second is use to lower the speed of a fan if it is too loud. 3:45 make sure that you buy the correct size switch as shown here. I purchased ones that were 1/4 of the size and had to 3D print custom enclosures to make them the proper size. 4:00 The copper strips are not needed if you spot weld the batteries. The zinc strips worked well. My power inverter also already came with heatsinks. 4:21 he says 4 NC and 3 NO 45°C bimetal thermostats when it is actually 3 NC and 4 NO needed. 9:18 if you are using a flexible filament for the outer bumpers, there is a remixed STL file for the ring to be printed in flexible filament. That hinge is impossible to locate. 11:07 the hole for the USB C trigger is very large. I used tissue paper with glue to fill the hole. Hot Glue may also work. You can also shrink it in the files that is provided. 13:49 The graphic is incorrect but the video shows the correct pin, the wire goes to the common terminal of the relay which is why he offset it to do so. 14:08 The second pin of the switch gets used later, it goes to the relay pin shown in 19:24 14:39 Be aware how you solder the wires to the potentiometer as a voltage gauge is mounted directly above it as seen in 15:45. 90° solder joints are what I had to use. 15:24 The other wire of the switch goes to ground 21:53 This isn't a correction but you can drill a hole or bore one with a soldering iron in the center of the charging coils to run one of the connectors below the board. I don't know if it helps but I copied it like seen here.

[@kennyotsu4357]

Most useful commentary

[@esqueue]

I've completed it and posted some pictures of it in the made section in the thingiverse link provided in the summary. kzbin.info/www/bejne/pnzRc5J3jt-igLM Many of the parts and components used were different than the recommended components. This was mostly due to error but I had to make them work. Unfortunately, this meant that I had to redesign many of the existing files. Thankfully all the cad files were provided and easily modified with Fusion 360. I got a 10 watt fast wireless charger instead of the recommended 5 watt. This will charge wireless devices twice as fast but it was larger than the recommended. The charger actually needs 9 volts instead of 5 volts to use it's full potential. I used a mini step down converter (purchased 10 by mistake) to drop the voltage from the battery down to 9 volts and soldered the power cables to the wireless charger. This way, I don't need to turn on the usb charger switch to turn on the wireless charger. I also got RGBW (additional White Light) instead of RGB and the controller was larger. These upgrades required the top compartment, and outer shell to require modification. The inset for the wireless charger circuitry had to be pushed more toward the center of the device and some of the dividers needed to be removed in the top compartment cover. The outer shell was changed too. I pushed the target circle for the charging back to it's new location, holes were relocated to match the new outputs of the lights and RGBW controller hole was changed to be more clean. I made a new switch cover and completely closed the hole that is usually on the top. I had to modify the IO plate a decent amount. All the text had to be enlarged and they had to be put in a bit deeper. I also had to enlarge the hole and add some cutouts for my outlet plug as my plug had side tabs, which meant that I needed no glue. I also had to lower the LED hole for the inverter my 4 mm. I literally printed about 11 or so IO face plates till it got it correct. The usb 3.0 charger I got was much smaller than the one recommended so I made a adaptor tray with a thermostat slot for the new circuitry to sit on. The CC/CV buck converter was also different and had no screw holes so I used some high power 3M double sticky tape to hold it down. I had a spot welder so no copper strips were needed. I had some nickel strips which I used. Fortunately my inverter already had heatsinks. I used some pretty good cells that tested out to be great on my iCharger 1010b+. On my first test, the capacity came out to be 17,226 mAh @ 11.1 Volts or 191.2086 Watt hours. Does it seem low? 191.21 Watt hours is about 52,000 mAh at 3.7 volts if I were to show the capacity like most scumbag sellers do. Only thing left is to properly print the badge.

[@PlateInStock]

He said 20 amp fuse but the screen said five amp fuse

[@esqueue]

@@PlateInStock He said 20 amp, the schematic says 20 amp and he used a yellow fuse which is 20 amp. Use a 20 A fuse.

[@MrJackfriday]

as a noob and only knows how to solder and has a 3d printer, it would be nice if you make a separate video tutorial step by step guide on how to assemble this. i can only copy cat/ monkey see monkey doo things honestly

[@JohnnyForehead]

Holy crap dude! That's just a work of art. If you came knocking on my door for a job and I had seen this video then I'd hire you on the spot, no questions asked.

[@doge820]

Timestamps for mobile users: Materials list: 2:45 Battery Pack: 5:42 Charging circuit: 9:52 Inverter circuit: 12:50 Mid layer assembly: 14:17 Relay power system: 18:26 Tests: 19:32 Top layer assembly: 20:19 Build complete: 23:25 RGB montage: 23:54

[@metinaydogan8841]

TL ??

[@TheSCUBIDUBI]

What is the name of this program? 5:28 Tell me please

[@theperfectionist4702]

@@TheSCUBIDUBI the name of the PROGRAM is SOLID WORKS

[@jayden758w]

1

[@brlinrainf]

@@theperfectionist4702 yeah, does he have blurry vision?

[@saptarshisabui]

It is not a power bank, it is a power station ... You are a genius

[@Tensho_C]

@@elixier33 have you tried it

[@Geoffr524]

Goal Zero calls this type of thing, a Generator, because this turns battery output, to AC line voltage, to normal Outlets. I have a "Yeti 400". It is a battery/powerbank/inverter, and this charges up via outlet, or solar panels, by Goal Zero.

[@TigerManGaming]

A power station generates electricity. This doesnt.

[@Tensho_C]

@@TigerManGaming i think he meant station as in a larger capacity system. You are right though, power stations are technical names for transformer stations and generator stations

[@HappyfoxBiz]

you know he's a engineer and not executive when he's put more protections on it than they are willing to pay for and it's got more functions than beautifications

[@by010]

exacly what I need. I dont need cosmetics. I need raw performance. Sell me one? ;-; Kickstart it? It could be really really really awesome kickstarter campign....

[@BlowitAllUp]

It's not ugly though lol

[@IkkeiOdaira]

@@BlowitAllUp It's not beautiful, it's ASTRONOMICALLY BEAUTIFUL

[@SartBG]

You should honestly see his first version. This is like 10 000x times better :D

[@IkkeiOdaira]

@hXcFreethinker nice to know, I hope he makes a version that does not require soldering the batteries

[@how-to-step_by_step]

I literally search this video on KZbin to watch this video again after 3 years 😂 You crafted a masterpiece ❤

[@sudiplamichhane5888]

I didnot know why i watched it for 24 minutes without skipping?😂😂. i truly liked it. Thumbs up. 👍

[@its_mewan]

Im wondering now wht i watched

[@Pranav_520]

Hahahaha hasaucha solti ley. Same here bro.

[@ernesthamm1813]

same lol

[@goldcd]

It's hypnotic... I can't do that... I can't do that... I could maybe do that.. but I'd burn the house down.. I can't do that..

[@powerbatterychannel4315]

@@goldcd Indeed, its' unreal reality!!! )

[@geekazoid]

I just want to recognize the integration work you did here. You made use of inexpensive components and techniques to great effect. I tend to overbuild and I respect your efficient and minimal approach here, while still showing abundant consideration toward thermal stability and so on. One of the best DIY videos I've seen. Good job!

[@Den_Electro]

Hello Friend! kzbin.info/www/bejne/iISti32Or8yNh9E

[@ILoveTinfoilHats]

Not very often do these DIY projects actually take into consideration the level of safety and understanding this guy has

[@SongZee]

This is the manliest battery pack I've ever seen, love it.

[@gandalf1783]

I wanna order it

[@Im_the_Trashman_]

He missed the fact that 18650s are bad for sparking or exploding it's what people use in vapes and when it was wired wrong it blew up part of there face. I wouldn't recommend using an old one by any means

[@justsomeguywithhalfamustac4600]

@@Im_the_Trashman_ god.. That's scary

[@kotekzot]

@@Im_the_Trashman_ name brand 18650s are perfectly safe if you don't short circuit them and don't exceed their discharge current. They are certainly safer than the Li-ion batteries inside your mobile devices.

[@Ponnybit]

nah... it has rgb.

[@muhammadabrar6230]

Instructions are through, just love it, He is not saying i can do it, HE IS TELLING US LETS DO IT

[@jamesmartin5988]

Thanks for giving out more information then the $60,000 mah

[@popvotocek]

This is one of the best projects I have ever seen.

[@foreiveralone]

I'll be straight up honest with this... This is the most freaking underrated channel on youtube. Compared to other KZbinrs who can only react to some stupid videos? this channel is so much more educational and fun, amazing contents with extreme detail, not missing out a single bit, good job, I think this channel should really deserve more love and support. Keep working!

[@0623kaboom]

well he did miss a bit .... but stopped the video in editing to mention it ;)

[@gerardoarielparra9594]

Hi. Where can i buy these pruduct totally finished??? I dont jave the possibility ti made it.

[@nunofarizo]

Knowing how 3D modelling can be hard specially with something so detailed It's impressive how many hours you spent on this project just to show us how to do it without any hiccups! Thank you!

[@ryanyoder7573]

Especially

[@michealmathias2372]

I used to feel like Iron Man, by just connecting a Dc motor to a battery. The project is God Level (at least for me) You blew ma mind, keep it up.

[@davey2k12]

Behave he brought it all of eBay 😂😂

[@theperfectionist4702]

THIS MAN IS A GENIUS!🤩👍 I would really buy one! Nice work!👏

[@DeadlockCode]

Agreed

[@johnwayne8666]

same here if you every decide to sell them let me know i will buy for sure.

[@dillonrico5914]

I want one!

[@TimothyBennett-droidmahn]

The algorithm has blessed this video. Subscribed :D

[@mattsonmccraw6767]

Really great project! Everything all in one, LEDs were a good addition too.

[@Red_Baron_]

я бы еще подсветку настроил в тон индикации зарядной платы

[@praloyslife8676]

This is the world's best power bank , thank you for sharing your knowledge with us.well done keep up the good work....

[@hakmon1]

The best video project I've seen, all due respect ! You're on a high level

[@Zeke-Z]

I start the video like, 'oh another 18650 battery build. I hope no one gets hurt trying to build these without knowing how to properly discharge and I hope heat isn't a problem'. 15 min in, I am convinced you are a wizard! Way to pat attention to safety and thank you for your detailed instructions!! This was a great video!

[@DJZofPCB]

thank you for sharing your creativity, experience, and time.

[@markhaus]

Wow the incredible amount of thought put into the details of this is insane. Without putting together a pcb design you somehow managed to make one of the most feature packed, high capacity, portably small battery pack I've ever seen.

[@Judahmangi]

This is easily one of the best DIY tutorials I've ever seen on KZbin, mad props to you! It's not only a unique and impressive project, but you do a really great job of walking through the steps and making sure it's detailed but not tedious. You are a very good communicator! I didn't plan on watching the whole thing, but only a minute or 2 in it really grabbed hold of me and it was over before I knew it! (Btw, I think you pronounced removable perfectly well!) God bless :)

[@felixliew4332]

One of the best video I ever watch. Tks bro.... Do you making one for sale? Lols

[@boltthunder8684]

@Limey Animator Just ask someone else to make it ;) I'm setting up my own little makerspace in Raleigh.

[@felixliew4332]

In malaysia hard to get those parts. Thats why im interested to get one?.lols

[@空城-v3x]

my brain : yes! I can make one! my hands : no! you can't!

[@thomastownsend8510]

I feel the same exact way lol

[@Cris-ot5zm]

@@thomastownsend8510 I feel the same ja ja ja ja ja :) :) :)

[@twisteddarkdays8150]

feel like I could make one if I want the biggest problem is the getting my hands on a good 3d printer

[@naomiwolf8944]

@@twisteddarkdays8150 I wanna a make one too but who said you need a 3d printer just make it from plastic sheets and hot glue lol

[@meLife0nline]

i could make it, but i feel like its gonna blow up if i did

[@HughJeffreys]

Wow, that's epic!

[@rohit_universe_xd2734]

Hi sir i am your big fan ever

[@bmello6693]

Ayyy it's Hugh..

[@BornIn80sGrewUp90s]

I love you Hugh

[@rifatahmed4659]

And we're done !!

[@Timzhp]

Please start a kickstarter....or let me know how much you want to make another one. This is power supply is beautiful.

[@mobseen69]

Same

[@gagecoffelt3808]

id pay for one

[@simovetri8148]

me to, it is too complicated to do it. I rather buy it from you

[@Timzhp]

Dude create a new one and call it "the mother box"..LOL

[@0623kaboom]

yup me too .. I'd go for cost + 10% and shipping and handling ...

[@learrus]

You are really some next level thinker and builder; fantastic job on this.

[@jgrant5255]

Excellent work sir. I would purchase one of these from you if it was available. Seriously.

[@cpu6850]

ikr

[@rudykalkhove]

+ 1

[@Mr.deBest]

yeah me2

[@TheDavemarz]

If he were to sell them then he would need to have a slew of outside testing done to prove that it was safe and would not interfere with other electronics. UL and/or CE listings just to start with and of course lawyers would have to get involved because they always do. That testing, the lawyers and maintaining the records would cost enough money that the cost of this would approach what you would pay for something similar from one of the standard shops. Sorry guys. Although, I do wonder if the same testing and paperwork is required if he were to sell this as a kit?

[@AndyShell]

deff the most advanced manufacturing techniques and array of diff techs combined of any diy 18650 video ive ever watched. very amazing great work! ty!

[@AnkitRajpoot]

So, how many features do you want in this powerbank? This guy: Yes!

[@kralyn3d]

Hello everyone, this project sure took me a long time to complete...I hope you enjoyed it! Additional schematics and the full script are in the description. If you have any questions regarding the build process or design choices, please ask them in the description. I will try my best to answer them.

[@onkarsahu1702]

Hey bro are you interested to sale it

[@Treddy0810]

Sell the Power Bank itself!

[@Evgeniy_6KWT]

friend, you are amazing!

[@NightForce]

100% Copy will be sold in China in like 4 Weeks! no BS..

[@NightForce]

Better get a WW Design-patent ASAP! just sayin..

[@MegaAstronavt]

Just GREAT! I agree with the others - you should make this a kickstarter. It's a great work.

[@westsidepimping]

This is what I need! Thinking today about doing power bank for laptop, but not this complex. Has everything you need, looks great and it is DIY. This is next level. Respect

[@peternorth4143]

you lost me at 2:24 when you said, " I will now show you the step by step process..." One of the best practical DIY projects I've seen in a while.

[@munki037]

Thank you for having confidence in us to build it.

[@0623kaboom]

none of the actual build is hard ... finicky sure but not hard ... mind you the adjustable soldering iron he has is not something most people have

[@Pryside]

Holy shit that is a well engineered power bank. By far the best powerbank I've ever seen. Really love your design, definitly want to build this if I find the time :D

[@NIGHTDREADED]

The improvement beetween your first video and this one is insane! Soldering skills, finishing, everything! Great job!

[@rchaffer]

0:53 "Shipping to Hogwarts" You're a wizard, Kraly!

[@JenGM24]

Lmao😂

[@DragonsREpic]

what are you talking about he said nothing like that

[@cgraves9981]

@@DragonsREpic Go back and look (not listen) at the Shipping to Hogwarts for $3.62. Its part of the checkout screen. Pretty funny

[@GlennBrockett]

Beautifully done. Even though I would never attempt the project, I do appreciate the CAD plans being made public. I would consider purchasing a finished version though.

[@Tu-cv9ei]

Why am I watching this? I can barely put together legos

[@cdoublejj]

ive worked on electronic project since i was kid and this looks hard AF!

[@00pingvin00]

how you understood this if you didn't try? do you think other people was born with this knowledge and skills?

[@id_NaN]

Me too

[@kalifack]

because your brain is telling you. TRY IT :D

[@scuddrunner1]

Me too! You lost me at hello! LOL!!

[@Panzer_4]

Just wanted to say thank you. Really appreciate the work you've put into this, and I can't wait to build it.

[@astropgn]

Did you make it?

[@slimel-gharbi8170]

A real pleasure; Thank you so much ! Congratulations, you are among the best

[@kennyotsu4357]

My crush: - Hey, dont u have a powerbank, my phone is dying lol Me, an proud KRALYN subscriber: - oh, *y e S, C E R T A I N L Y*

[@loneenvoyyale5259]

Underrated

[@anaysharma6916]

Best portable power pack i've ever seen Awesome work

[@Eliton.K]

amazin epic bro! regards from Brazil and world!

[@ForeverMan]

why do you think people care about the country you are from ?

[@severinstorm1431]

Wish i had a 3d printer. I need like 5 of these in my life.

[@jacktastic715]

Same I want one like this

[@alexfletcher8465]

@@jacktastic715 Just get one i have a few theyre dope

[@Technicallyaddicted]

If you're willing to pay for my PLA (can't do abs reliably) and shipping, I'll print them for you.

[@DaDavidVids]

Love how you used Apple iPhone headphones for the voice recording mic. Also I am astounded. Definitely subscribed, it's the least I could do after your efforts.

[@sonvu7896]

Instantly subscribed when you show the BOM list. Very detail project, keep it up bro

[@davesoraytc9889]

Holly those complex circuits blows my mind. Awesome video mate!

[@piotr8803]

me: *immediately skips to the end of the video* kralyn: thank you very much for staying with me through the whole process well shit

[@PBaraik]

**watches entire video again.**

[@Stoney_Eagle]

It's a nice project but your soldering work is realy dangerous. You should fuse the solder trough all the wires and not tag it on like glue. You should always end up with a smooth finish.

[@tenshi7angel]

This is correct.

[@kralyn3d]

Well, I have to admit that I don't have the best of soldering skills. However, I would like to make these two points: 1. I was making it in my dorm room so I had to use unleaded solder, therefore a smooth finish is almost impossible. (also it is A LOT harder to solder compared to leaded Solder) 2. Since I'm filming, I sometimes had to solder at an awkward angle so my hand and arm don't block the shot. Some of the footage are for demonstration purposes, I finished the joints at a batter angle after the shots.

[@Stoney_Eagle]

@@kralyn3d I have never heard anything about not being allowed to use leaded solder, but what I try to say is that I see so many DIY projects that doesn't teach the correct way of soldering witch could endanger people.

[@somedude2492]

@@Stoney_Eagle if you need to learn to solder, you shouldn't be SOLDERING LITHIUM ION BATTERIES by the dozen. That IS going to go wrong at some point, and that is not going to be fun.

[@km5405]

with some practice you will get it right im sure. they make a fair point ... loose wires in power electronics are dangerous :-)

[@rslacanlale]

Bro you are an amazing genius. Keep sharing good video like this.

[@johnnykernel4557]

Applause for a great example of electronics craftsmanship ! ❤

[@greatdndstories]

love the video and been wanting to build one like this for a while now, even have the 18650's, but I'm new to building electronics so want to start small and build my way up, so gonna build the hand warmer you made when I get some time. I'd love to see more videos like that, small projects that are fairly easy to do and follow, that way I can get experience to build this baby. Great videos and great channel keep up the good work

[@Houstonruss]

At that level it'd be easier to design a PCB LOL

[@BadMax02_VR]

thought so too, like solder on the relais and every dc-dc and inverter boad cables to the marked pins on the pcb would hae been much easier and probably also not as cluttered

[@BadMax02_VR]

Way to much wiring mess and he also used unnecessarily thick wires i mean like too thick they didn't need to be that thick because active cooling and short wiring

[@BasovMichail]

Hmmm. PCB my first question. Second: Why diode? Use P-Channel power MOSFET. Third: Why Relay on output? Use P-Channel power MOSFETs.

[@BadMax02_VR]

@@kralyn3d but you could also have Used through hole components and relais dont fail often.

[@lostplshelp]

@@kralyn3d JLPCB is extremely inexpensive, and could always just use through hole instead of surface mount

[@toystorybro]

This is brilliant work! I applaud your efforts and your talents on creating such a diverse unit! Truly inspiring work! Hats of to you!

[@luisalbertocervantes5667]

That was awesome, it's unbelievable how you think each part perfectly.

[@mehulshyam404]

Dude u have great potential...such videoes require a lot of sharing...keep up bro

[@amirreza6526gd]

PERFECT AND AWSOME EVEN some of the BEST power banks Does Not have this features This is a complete & a repairable (batteries) power bank Keep up great works

[@Stalka42]

everything cost 58$ only *3D printer enters the chat*

[@xcruell]

Why would you mind building things like this, without owning a 3d printer?

[@floofyboii6034]

Akhilk 99999 just go to a local library that has one

[@Stalka42]

@@floofyboii6034 3D printers are still not a thing in my country

[@kevinrdunnphs]

They aren't too expensive. I picked up my Ender 3 for $170. I've printed RC model planes with 40 inch wingspans in parts on it and flown them. It's so worth it.

[@zedg7473]

@@kevinrdunnphs "Aren't too expensive" "Only for $170..." Inb4 I get roasted for being cheap, yes I get it's an investment for a highly specialized machine. I was just making a joke 🙏

[@unitiveinv854]

That's the coolest project I have ever seen. just cheaper than commercial power banks with more capacity but DIY is a way to make our own idea for cheaper and also with the ideas you have. that's great

[@top6ear]

This is brilliant, great work brother. This should be a mandatory project for high school kids.

[@mindaugasjankauskas7658]

Well, dude, this is my very first comment in the entire my life never done that before, just want to say you are so cool, really that was genius well done !!!

[@Elfnetdesigns]

You should spot weld the battery tabs and leaders rather than soldering them, this will not introduce a lot of heat to the cells and make the overall job look neater and professional. Also change out the LED voltage meters with a single LCD based one that can be changed by the end user to display monitored voltages and currents. This will reduce internal power consumption by over half of what it is currently. Also remove any non-visible LEDs from the internal PCBs as these are just using power and are not visible by the end user on the main panel. You want to eliminate as much redundant visuals and such as possible to make the battery power last as long as possible for the end user. Like exchanging the mechanical relays for solid state relays or reworking a transistorized switching system. Design your OWN PCBs and stop using other pre built consumer tat.. You can get everything onto ONE PCB and save a ton of space which in turn can be traded off for more battery space = more run time By implementing a microcrotroller you can design a system that has better control over charging and discharging, metering and monitoring, temperature control and even recording data for later download and examination similar to what a UPS does. maybe even allow the end user to set parameters for the inverter and battery levels to shut down the system or sound a warning alarm when a low level is reached. Ditch the USB C charging connector and use a more secure option like the USB mini or just the barrel jack. Include a plastic or attached rubberized safety plug for the AC socket, USB jacks and the barrel jack so moisture stays out. It needs a handle that can be folded away and maybe some rubber or silicone end caps for anti-shock. A dust filter for the fan that is of common size and easy to replace. none of that proprietary crap, consumers HATE that shit having to special order a filter and pay 2 arms and 6 legs for it..

[@vylbird8014]

Proposed future video: How to spot weld batteries. Ideally without any expensive tools, if corners need to be cut.

[@Technicallyaddicted]

Dude you are a boss. I can't thank you enough for making all of this free to use. That isn't very common these days. I will make a reply video for you using your knowledge and show you what I built from it. You're awesome

[@therealjordanvo]

This is super incredible! I love your design and I think it's very clever, I'd love to try and make one of these one day. Awesome job

[@videosyoulove6803]

Dude that really awesome I wish that u make more DIY projects like this

[@dakotabobbitt6887]

Lol the more I watch, the more I am utterly impressed. You are a genius

[@CommonCentsRob]

Brilliant video. Thanks for all the editing to get the details in.

[@tratzum]

Impressive. If I wasn't so afraid of messing with electricity I would give this a go.

[@RespawnRestricted]

for real that is one of the best ones i seen on you tube younshould do KICKSTrter

[@wrxsubaru02]

You should have just did a kickstarter and sell these

[@EverettVinzant]

And those of us that have electronics skills/3 D printers are glad he did this instead.

[@kevinkhoy8478]

That was a well put-together video. It was structured, very detailed and the layout of information was easy to absorb. I would come to this channel often if you could make easier stuff lol. Less intricate electronics diy lessons so you have more time to create more videos. Thanks for your hard work!

[@realvivifromloona]

Disclaimer: Make sure to buy brand name batteries like Samsung ones, not those cheap 1 dollar ones. Those catch fire and have a very low capacity.

[@thomasbradberry5228]

get panasonic tho

[@ttthomasss77]

Be careful all the "Panasonic NCR" are not the same. You should buy a capacity tester.

[@Larimuss]

yeah those batteries are actually very expensive here $10 each and most old laptop batteries dont hold a charge anymore.

[@realvivifromloona]

@@thomasbradberry5228 I just used Samsung as an example, my point is to get actual brand name ones and not those 1 dollar "Ultrafire" ones that lie about their capacity

[@flightworks6874]

A Guy yeah like the alibaba ones he linked in the description are quite likely fake rewrapped Panasonic’s with fake capacity ratings

[@LifeofAedan]

Shit, with your smarts you should take all of the pcbs and make you own pcb with all of the components on one. That would be so cool.

[@Gamer-nc8qp]

I would fking buy that immediately

[@kvdy]

@@Gamer-nc8qp yeah me too

[@witonosfreestyle]

Neat and amazing work! This could well be a good kickstarter project!

[@andrewpascual]

Wow I would be proud of my self if I was to make this cool and awesome powerbank by myself, unfortunately with all the wires and other parts to be put together plus you have to check each one that no wires aren't touching each other that would be horrible or that could cause a house fire if you aren't careful in making one of this diy powerbanks but I must say That's one of the unique and coolest powerbanks I've ever seen keep up the good work. You know you can have a lot of money if you make a lot of these powerbanks and sell them in the market because I might be the first one to buy them from you if it wasn't that expensive to make good morning to you

[@markbohm6134]

Absoluty amazing project. Thank you for sharing everything. Amazing Video.

[@nemisis010]

Fantastic work and project. Definitely got a sub from me.

[@edonai5416]

You've heard of the Powerbank now get ready for the *Gaming Powerbank*

[@mrwojak2802]

Not funny

[@あるるるるるる]

面白くない模様

[@g60force]

@@mrwojak2802 your mum!

[@mrwojak2802]

@@g60force your mum gey

[@jayzo]

I wonder if Linus Sebastien has seen this video

[@outstanding1448]

Truly impressed. The things internet was meant to be. This is evolution, Not how "people" sell themselves for fake internet points/views. Congratulations for your ingenuity!

[@rilufuzz]

This was a very well thought out project, im glad i found your channel! Liked and subbed :)

[@christiansprojects-cgmanuf1426]

Nice work man but you definitely need a more powerful soldering iron!

[@Gnubbelking123123]

better to spot weld the batteries.

[@Phoen1x883]

TS-100 is great for typical electronics work, but soldering huge blobs of wire all stuck together is pushing the capabilities of the tips it has for small scale work. I keep an old $5 40w Harbor Freight soldering iron around for work that really needs a lot of thermal output. Let it heat up for 5 minutes, and it'll melt the solder for an inch in either direction on that abomination at 21:35.

[@christiansprojects-cgmanuf1426]

Phoenix Exactly. The problem of these small irons is the small heat capacity caused by the small tip and the weak heating element. For soldering thick wires or high current stuff you need a tip that is as big as possible and at least 40 Watts.

[@ryanho7033]

I wish I could give an internet standing ovation. that was amazing.

[@walttechnology]

Good day sir Love your videos, though complex but I discovered that by playing it countless of times help understand your connections well an wised to be guided to build like you. Good work sir

[@musaibngani]

What a satisfying video it was, MAN! I subscribed you 🥰

[@Katjajaja]

We all gonna ignore that fact that his ebay cart was shipping to Hogwarts school of witchcraft and wizardry?

[@crayoneater68.5]

it doesnt say that anywhere

[@ca280491]

@@crayoneater68.5 yes it does 0:55

[@steelthfighter]

www.google.com/maps/place/Hogwarts/@56.9941647,-5.6182577,8827m/data=!3m1!1e3!4m5!3m4!1s0x488ea5f9433a4b9b:0xecd2a44a94ca10ed!8m2!3d56.981676!4d-5.5798

[@axelfoley1406]

LOL

[@axelfoley1406]

It's for the wizards who are on a magic lockdown.

[@alexdsilva8143]

It's awesome man I always wanted to make this kind a powerful battery pack now this video will help

[@sahilsharmadec25]

m nt gonna say your project is brilliant m gonna say ur the brilliant guy and realy kind person .. no one share there CAD files but u did thts very appreciate

[@tusharmaurya1668]

This video is very well explained! Thanks for that!

[@GrimReaper-kr6je]

Now that is the power bank that ive been looking for

[@Lonely_Waffle]

$60-$70 for that? Thats incredible. I’m gonna learn to solder and practice a bit and get started on it!

[@LS-jk3fk]

any tutorial recommandation or tools? and if you know where he got the solder in the vidoe at 1:23? im the type of creative teen who has patience and would love to mess around with electronics and engineering like this but safely and with guides, since i am too young to take college courses or anything yet haha. I am very interested in tech though and consider myself good bu ti want to learn a lot about soldering, irons, and types of it like lead soldering like you.

[@Lonely_Waffle]

Lyle I havnt bought everything yet but I’ll let you know man

[@MarcAntoine01]

@@Lonely_Waffle TS100 was the soldering iron used but if felt like it was struggling to get the solder up to temp. I believe the voltage supplied was not high enough but could be wrong.

[@Lonely_Waffle]

Marc-Antoine as long as the solder heats up the solder properly, you should be all good. I’m about a quarter of the way done

[@reefjames6302]

@@MarcAntoine01 I have the TS100 and it is really good. Controllable temp up to 400C and works just as well as low-mid range soldering stations. Plus it's in the form of a large pen, it's my fav iron ever.

[@ShiftyGearz]

My interest is DEF peaked. Thanks for sharing . I'm conjuring up a design similar to this that I can plug into a portable solar panel. Thanks for the motivation 💪

[@dabreadman6567]

Make a business, I'll buy one. That will sell over $100 easily with some decent components.

[@pond3rboy]

hahaha if parts cost $60 and it takes how many hours of labor to build? there would be no point in making only $40 on each one.

[@dabreadman6567]

@@pond3rboy Dude stuffing it with components from reputable suppliers will increase production by say $80~$100 or whatever sure but this device does: 1.RGB Lights which can easily be made to change color to show the status of the product like / user customization. 2. MASSIVE power bank capacity 3. An AC 150w outlet (I'm already sold at this point) 4. Quick charge USB 5. A MODULAR battery bank (Absolute madness because he can sell expansion packs AND a possible conversion kit like solar) 6.DC Power supply, adjustable as well WITH active cooling. 7.Wireless Charging. If you were to slap some good stuff in there with great customer feedback along with rugged build quality for the housing, that thing WILL spring board to lunch money $60 to a chunky $150-200 or so quick and that's being damn generous. This dude sitting on a brilliant, money printing idea, you just hating.

[@pond3rboy]

@@dabreadman6567 Agreed dude, now you're talking

[@benos1799]

@@dabreadman6567 I need this

[@antibrevity]

No way could this be sold commercially for $100 in its present form. This is at least a $250 product, but the creator has done an amazing job of creating all the information you need to build your own for much less. Yes, it's rather complex, but the design files and instructions are well done. Very impressive, KRALYN3D! I hope you get 1M+ views with this. If this were to be manufactured, it would need a ground-up, unified design suitable for production. A Kickstarter might be cool, but it would take quite a bit of money and expertise to bring it to market. The comments suggest that there's an obvious, untapped demand for a "high-level" power pack like this, though, so *someone* will undoubtedly make it happen. I certainly want one.