This a real Masterpiece, with a lot of work behind. You really should consider selling this in a mayor scale

i definitely want a commercial version

After about 18 min I realized that I won't even try. Take my money.

I think selling this as a DIY kit would be the most economical. I would love to "lego" all those components together as sourcing everything would be a pain.

Really intresting! Looking forward to buy it :D

The sheer amount of patience and planning that went into making such a great project is really commendable! Great work!

i went into this video with very low expectations, left really impressed and i watched it from first sec to last without skipping just because how interesting it is, keep up the amazing work man

Wowee! & Now he's going to show us how to MAKE this Amazing Tool? I dig Open Source Manufacturing!!!

Hello everyone, part 2 of this power bank is now LIVE: kzfaq.info/get/bejne/qruHpKibxLC-mY0.html. Also, I have decided to prepare for a crowdfunding campaign for this power bank, so stay tuned for further info. Thanks for all your feedback!

Congrats bro on the sponsorship! I found your channel from the 18650 power bank and have loved seeing all your projects. I really appreciate all the hard work and time you put into your projects

Omg i really Love this Powerbank now, includes the Features Like Addons or more Battery Packs. Insane Powerbank! Like you got, sub you already have :) hyped too see the other Parts!

You are a genius, I am an Electronics and Telecommunications Engineer and I can imagine the amount of work and testing you put into it. Really it is awesome.

A commercial version is worth making simply because no other manufacturers are making a power bank with expansions, wireless charging, USB-C power delivery and RGB lighting in one package. It's unique and definitely what many people are looking for. One thing worth mentioning: always use redundant ground connections! By making ground connections by screws there is still a small chance of the connection failing. It could be dirt, oxidation or corrosion. Always have redundant grounds.

you are the best DIY channel on the whole youtube keep it up!

humanity needs this powerbank.

Awesome! A commercial version of it would be great!😃

I thought the first USB C power bank was amazing this one is off the charts!!

This is literally the best power bank ever! You were so detailed in your video and you have amazing patience for this project. You will definitely get a huge tradeoff making this for the market!

You've done very thorough work here. This is a really great implementation of your concept.

I just designed and printed off a case for an existing power bank I bought and now I feel like a chump. Your fully custom job is AWESOME. edit: MEGA AWESOME.

Very impressive project. Congratulations.

Damn, i loved it! I need a power bank like this 💯 Can't wait for the next video 🔥

Amazing project. Definitely better than the previous power banks. I don't have any tools to build it myself so selling it would get a lot of sails.

I'm so happy I found your channel, this ist exactly what I like to see

Your power-bank is not just electronics, It is a piece of Art. And the way you have explained it, there is just one word for that "Wow".

This has been one of the most complex circuit designs I've seen let alone battery designs... and I love it! Keep up the good work!

This video is absolutely fantastic. Congratulations on learning circuit design to the point of being able to make this device. I cannot imagine how much effort it must take to understand and utilize all of these components.

Dude... you are a freaking genius. You know that right?

I LOVE LOVE LOVE your first power bank; but, you’re RIGHT, it was seriously complicated.

Looks good! Definitely looking forward to buying (or building if supply isn't good enough).

Here we go again ... Great job dude! Greetings from Brazil.

Fantastic engineering in this. Very well done. Even more impressive after you said you've not been doing PCB design for very long. Congrats. ;)

Hey am a 15 year old student that has been trying to understand how battarys work and other stuff thru programs at my school. And I just want to say that u have helped me understand how this stuff works then any other teacher at my school THANK YOU!!!

Thanks bro. Love and Support from Bangladesh 🇧🇩🇧🇩🇧🇩

That's incredible cool. You are a real wizard with electronics!

I truly admire all the skills you got. Also, thanks for sharing such cool project in the DIY community

@2:05 the power bank on the right is mine. 😁 Thanks for such an awesome design and I may be making another one. Just tipped.

I suggest you go commercial with this! I’d love to see this in stores, or even just as a build kit with all components in the box . Godspeed :)

Yes, it’s all about continuous improvement!

Dude, you should contact a company. The genius idea with "modules" is what companies are interested in. Just not a product but a whole product line is very lucrative.

"you can just stick the corresponding pins into the corresponding holes and apply pressure onto one side of the pins to provide a good connection and click the flash bootloader button" -Thank you for that you had me cracking up. 🤣

all companies will stop making after you make it commercially... for advertising, this youtube video is enough for the consumers to understand... i'll be waiting eagerly... This portable version is super awesome... I guarantee, it'll be the best product in the market for decades... why??? I know you'll make version 2 then 3 then 4 and then so on... keep your good work... since i'm not such a pro and can't invest on 3d printer, i have to wait for your product to launch commercially.... Again... Superb.... Masterprice...

Man, this is next level of innovation

You seriously rock...making this a FOSS project is huge. Thank you thank you thank you!

I'm in the first year of electrical engineering school and I like all the ideas in the video. I want to build a similar one when I've learned what it takes to build one just like it

DUDE YOU DID A GREAT JOB HERE...WELL DONE..THANKS FOR SHARING ALL DATA...BAD ASS BROTHER.

This is seriously a brilliant design and especially with the module system which have been long since we seen anything modular. Instead of making thing smaller and smaller by sacrificing feature and making it inferior, manufacturer should focus more on feature and specs. I hope you hit big in the future and able to work in a company designing it or be the boss of it.

This is ultimate powerbank... looking forward to buy it..

that bank is awesome looking .

Been waiting months for this. Excellent work.

Look who has done it again amazing man. Wish I could buy a complete unit and just use my own 18650

Best power bank ever looking to buy it

It's truly unbelievable what you've done here, I can't begin to think how much work you've put into this. I and many other people would love to buy this if possible one day. Keep up the good work

I don’t think I’ve seen a more detailed and thorough video in any field. Excellent. I have a few projects to finish beforehand but I think it won’t be long before I give this a go. Thank you.

homeboy....just go on and put this on the market. don't sleep on this my dude, you WILL regret it

I'm stoked for this. Hopefully I can pull this one off

I like LEDs as much as the next person, but a version without all those LEDs would be logical imo. And grats on the sponsor.

I have been waiting for a very long time for your video. 👍

Kralyn thanks for ending with 1 Cor 10.31, You're amazing.

the most complex & advance power bank i ever seen in my entire life - salute to you 👍👍👍👍👍👍👍👍👍

I am so happy to see this!!! You have come a long way sir and honestly I am very happy you enjoy this! I have some questions about your old power bank, because while this one 100% beats it, I still would like to have that one built, and I'm having trouble. Amazing job, and never let anyone stop you from doing what you love!!!

When I reached the 9min mark. I realized that I can't even imagine making this myself. The reason is that I don't even have a 3D printer leave alone that Spot welder yada-yada 😂. I have a mere soldering iron(Actually I have 2 good quality ones😅, I know it's not a station) and can source the modules from aliexpress. But, then this guy took that option up the notch by including a custom PCB 🤷‍♂️. And that's when I realized that it's fruitless to continue to watch this video for education purpose. I just saw this for the amazement of making something like this.

"The universal expansion port on the side" - But wait, there's more!

Me before watching this video: that looks really neat. I bet I could learn something, maybe I'll even build one. Me after watching this video: I am so far out of my depth I'm not sure what I just watched. Maybe I should wait for the commercial release.

Really impressive!

Congrats on your first sponsor man

Loved watching the process from first to last. I must say this is a masterpiece. I would love to make one but I'm not enough qualified to understand all of these... BTW, waiting for the next part...

Cheers for the video clip :) yep be safe guys

'awesome' i love your work and talent

really a master peice no one do these efforts on youtube except you thts very appreciating bro. and one suggestion plz tell us evry parts cost like how much gona spnd on battry pack

Glad you got a sponsor! These vids must be costly to make

Nice project dude im proud of you

Depending on the retail cost, I guarantee there is a demand for this! It's incredible!!!

your helping people in so many ways. The way you explain everything is very detailed and i really appreciate that you take the time to explain as much info in such short amount of time

Lol this is the most complicated diy I’ve ever seen, great job by the way! 😂

WoW! A lot of work went into this - Thanks! Sure, I would purchase a commercial version!

99% of people def won't build this and would rather buy at an affordable price but appreciate you sharing plans and showing how one could be made though. Could you possibly do a redesign of the first model to overcome the initial design flaws? This one seems more complicated to make.

This a masterpiece of Innovation.

This would be great for commercial development. This is more than just a power bank...its an experience

This power bank and the ultimate one both are amazing. Modularity concept is very nice. Definitely will try to make it or wait for the commercial one.

this is the ultimate powerbank

AWESOMEEEEE!!!!

You should know that people want to buy for sure this version when the last had so much request

Kralyn 3d is back.. After a long time

I'd buy one, you got a new subscriber :)

ALL your projects are extremely good, especially those that are just like this one. I really like your channel, congratulations and for such a good job you do!! 👏👏👏👏🎉🎉🎊🎀😍

This is talents brains and you are very gifted ...awesome

you should totally take this to market, love the modular approach

A real hard work waiting to buy it

Some suggestions: Use a dedicated pd/qc charge and chip with built in charge/discharge. If not use pwn to generate the analog reference for the feedback of the DC DC converter. Try to use the ADC channel of the atmega itself. Use as more as possible chips via the same protocol bus to simplify the design. And use an ldo to power the Arduino an DC DC converter is just overkill and have relatively hi quiescent current. You're using cells in series, your bms does not provide a balance. Over time the pack will go into an unbalance state. The cheapest way to balance it back is using the eta3000 chip. There are a lot of board that uses that chip. The mechanical design is quite good. What I would change for sure: Use a proper battery connector (like the ones used on notebooks where GND is conected first, don't use the relay. If you design a proper protection circuit you don't need the fuse. Anyway, take a look to the BQ40Z50-R2 (battery gauge and balancing) and the bq25792 (usb PD, QC battery charger and PD OTG); IP6518C for QC3.0 and PD up to 20V@2.3A. With this configuration you can create a 4S2P pack with huge capabilities, that BMS have 4 temp sensor input, i2c bus, the charger can charge up to 60W using USB PD and also have two additional power inputs. the same chip can also do USB Pd output on the same USB input port.

This looks amazing. I would absolutely pay for a commercial version

You are just awesome, sharing all your findings and efforts as an Open Source Project.

This is amazing. You'd make so much money selling this on the market. I can't wait to give you my money! Wish I had the technical capability to safely understand this and not go building it blindly only to find out I did something wrong and the batteries thermal throttle on me and go Chernobyl.

I would love to give you money so I could have one of these. NO WAY would I attempt to make one myself. :-) Your quest for amazingness is very cool to watch!

In some months he opens a company: K R A L Y N 3D Inc. Quality and powerful powerbanks And other devices

Yes, I would like commercial version. It would be nice it it was in a finished and a kit version. I would like to assemble it myself (and to keep cost down). Also a kit without batteries, so no problems shipping it across the planet. Bravo.

This is really decent! Well done!! You won my Sub1

Yea this power bank is the best I have seen. I think you could really do well commercially even selling on amazon

Hmm now that i look back at it, I like the last one better. Looks nicer IMO