My Power Bank Rivals Commercial Ones?! Super Fast! (DIY or Buy) 

Go for it ;-)

@@greatscottlab I have a translated version drive.google.com/drive/folders/1xD557-1UVNz3oRqBK0LdAOf3IOp21Wg8?usp=sharing

I would be careful at least above 4+ cells. Because the seller made an hint and there is a comment, which say that a "Triode" is just rated for 16.8V. That isn't even reserve for 4S and probably will blow up at 4+ (which happend to the commentator)

Oh yeah! Can use that board to charge up the 4s2p Battery in my Torch now. Just unfortunate the board does not have separate output pads. Cant use the 4 LEDs

@@somethinks5624 oh yeah, you're right I was scrolling through AliExpress and found a review also mentioning that, I guess I'll wait a bit until there will be a fix or the manufacturer releases a fix ( which probably is unlikely)

For someone wanting to read the actual guidelines, look for "IATA dangerous goods regulations, table 2.3". Here it says: "Batteries, spare/loose, [...] power banks are considered as spare batteries [...] Lithium ion batteries: the Watt-hour rating must not exceed 100 Wh". You are allowed to carry up to 20 seperate batteries though, so just building multiple Powerbanks with 100Wh each would allowed on a plane.

no one said he will use it in a plane

But why?

Pretty sure he's more of a helicopter guy anyway!

You can lie and say it’s lower

is it possible to put 16 batteries? of course 16.8V, each cell contains 4 batteries, and of course with a BMS protection circuit, does it work? :)

And probably any DIY devices without oficially declared specs will get stuff attention anyway.

Hope you enjoy it!

same!

Do you have a link to what you have found? I'd like to look more into this. Plus, I think this board Scott tested seems to have lead connections to monitor the cells itself.

WOW! Thanks for the tip, Jovaras. That store was amazing. I ordered the IP5389 w/ batteries module on the spot. But I doubt it will come with eight batteries (38Wh), probably just four (19Wh) but still a great deal.

@@bfelten1 I think they have 2 versions, one without batteries and one with. I am almost certain that if you buy the version with the batteries it will come with all 8 with the rate capacity of 20800mAh, around 74 Wh. If you bought the 8 battery cell version

Would you mind posting a link? Aliexpress search can be terrible at times :)

Also useful in that shipping batteries internationally can be a real pain, so you can source your batteries locally, but ship the other parts from overseas without issue!

Thanks for the feedback :-)

i have a translated version drive.google.com/drive/folders/1xD557-1UVNz3oRqBK0LdAOf3IOp21Wg8?usp=sharing

At least he's using a spotwelder. So many videos try to do it with soldering which has it's own issues.

Probably nickel plated steel strips

Glad you liked it :-) And happy building :-)

You would have to test every single one first and be careful what you mix and match. A bad cell in your pack can bring down performance or start a fire. Unbalanced cells have issues.

Me: casually looking at my 50ah homemade 18650 battery pack from scavenged laptop batteries ... It runs a mini inverter and is charged by solar. For small electronics when no power. With direct DC outputs too. Only 5v and 12v simple stuff though...

@@XxTWMLxX how can you be sure it won't burn down your house

@@Henry-sv3wv you can’t but you can fuse each cell Tesla style or not use any cell below 80% state of health. That makes things much safer. Most problems are from people not properly testing all cells then pushing a 10 year old cell with a resistance of 227 milliohms to 1+ amp during a high load when the cell has 900mah out of an original 2200mah. That cell screams “internal short full of dendrites” and you’d easily catch it by doing the proper testing.

Hey, sorry to bother you, do you mean that you connected more than one board to the powerbank to get multiple outputs? If that is the case how does the remaining capacity measurement work? Do all of them still show the correct value? Thanks in advance!

It operates as normal the indicator bars are not accurate. I just go off pack voltage. It operates between 11.9v and 16.7v. all of the plugs operate normally even if the indicator indicates empty. They will continue to function until it hits its preset level which is apparently 11.9v. I've also found that if the modules lose power entirely and 0 volts they need to be reinitialize by plugging it into a live supply

@@nicholashamblin3600 thank you for the reply!

Its not doable, you don't want an argument with TSA lol

Huh. That reminds me of the big, chunky video batteries at the place I used to work. Those split in half solely so you could legally carry them on a plane.

Under 100wh is good to go. His pack is perfectly fine. Don’t get the acrylic cases. Turns my sw2303 into an easy bake oven. Edit oh you’re talking about the 16 or 24 cell powerbank? Wrap the cells in 1200mah fake sleeves. Problem solved.

Is it the same with 21700 cells? Those are the cells my powerbank (Anker 737 PowerCore 24K) uses

@@TheStopwatchGod Pouch cells are trash, all other battery forms eg; tube, box & plate are superior.

Yea DIY definitely won this one

Can you tell me why? i was planning to use the pouch cells for this proyect.

@@haloduncan Pouch cells have too much thermal expansion, it's not a solid case, they eventually delaminate, then swell up and fail. If you have the space, use name brand tubular cell for capacity and longevity. Avoid cheap Chinese pouch cells like they're COVID 👍

That's a shame, as this seems like it'd match well with an 18V power tool battery.

is it possible to put 16 batteries? of course 16.8V, each cell contains 4 batteries, and of course with a BMS protection circuit, does it work? :)

@@behnamp9174 Do you mean a 4Cell series and 4Cell parallel (16Cells overall) configuration? It should work! But as you said, a proper BMS is needed.

@@AmonadaLP yes yes yes exactly! sorry i saw your comment late. 4 Cells series and 4 Cells parallel which gives 16Cells overall

Ah shoot, I think this is what happened to mine. I replaced R7 with a 27k and it worked fine for a while. Now it doesn't even prompt another device to recognize it's plugged in. Oddly, it still blinks its LEDs, so they must be getting power somewhere. Suggestions on a replacement component are welcome!

Does anyone have a reference that shows what the LED blinks mean?

Nice

Guess what? About phones having a single cell, I have a fairly old but very capable phone (Redmi Note 4x) for which I made an external battery with four 18650 cells after the phone's original battery went completely bad. And yes, I usually attach it to the phone holder of a game controller which I place on a table. I mostly use it for watching movies or as a WiFi hotspot for my other devices (like right now). It's a really cool idea, one that I've been using for months now.

I have a few old ipods and iphones with completely dead batteries. They work perfectly fine using a powerbank.

I am using the kWelder.

It can partly power my PS5, or even my desktop PC or my whole house

@@tomer4566 It can *partly* power New York, that's the thing about the word "partly"

They have PCB's that can be superimposed on each other. The problem with this one might be the battery management.

is it possible to put 16 batteries? of course 16.8V, each cell contains 4 batteries, and of course with a BMS protection circuit, does it work? :)

@@behnamp9174 so far so good. according to spec sheets it’s actually the default 4s4p configuration.

Dolby atmos is proprietary. You won't get a decoder board for it. You can buy super expensive atmos av preprocessors but that defeats the purpose of diy.

Atmos is heavily proprietary and actively protected, even in the usual copyright is a guideline places (ie Russian and Chinese suppliers if you know where to look). You won't be able to DIY for any cheaper than commercial offerings. Dolby actively protect defunct tape noise reduction systems that they haven't licensed in thirty years. They don't let any of their IP go. Even if it's no longer a money earner.

@@medes5597 Maybe we can salvage some parts from older units and use other components like many DIY projects everything doesn't have to be a brand-new component. use the Dolby decoder as a black-box no need to understand all the details just the necessary ones to make it run. even there are some open source surround sound standards that could be used or any workaround. it's a good project to be explored. although I don't know anything substantial to make one myself yet.

@@jitendrasharma8685 that might actually be workable. Atmos probably has more documentation than the older systems too. I did try and get dolby noise reduction working on a tape player I made (solely as a personal project) and the lack of public documentation was what made the task impossible. Atmos must have some hobbyists and such who are working on it. Apologies if I came off too negative, I was remembering my own struggles with dolby systems and how much of a dead end it ended up being and I think I came across way more negative than intended. It's a good idea. Definitely worth exploring. At the very least investigating Atmos from a perspective of recreating it is a good idea regardless of outcome.

That's why I bought the anker one (737) on sale. It's still pricy but I didn't feel like DIY-ing it :)

Glad you enjoyed it!

Not every time

Well,....it depends. Buy is usually a bit cheaper but not as customizable as DIY. Both have their place.

@@greatscottlab He said 'better than' not 'cheaper than'....and I agree, DIYing is much more fun..hence better😉

@@apurvsharma1261 Yes! I agree!

@@greatscottlab DIY is cheaper, more fun and improves our knowledge!

It is USB-C PD Trigger board. Just search for it on Google or similar ;-)

PD output is 250W?

@@ericklein5097 No, three separate charge controllers, two of which are delivering 100 watts each and third is 50 watt with a legacy usb port and usbc port.

It may also have to do with the European numerals as well :) But mostly the camera angle and depth of field on the subject (what he's writing)

This board only does 100w (or 90). I haven't yet seen an ic for 240w

You might run into problems with the display firmware wanting to see a certain amount of watt hours. And the board inisde that Baseus is gonna be a bitch to fit in a new case. But overall I think a high capacity pouch cell based on the Baseus would be the way to go.

Thank you so much for the compliment. I know my camera work is potato. I really need a new phone but lately I've been living somewhere where cell service in my house is TERRIBLE and with a case on my phone I barely get 1 bar. I have to leave the case off to get 2 bars which means it falls and gets damaged quite a bit thanks to Apple deciding to make the slickest phones in the galaxy. If you want me to review a board feel free to recommend one. No guarantee that I will get it but any 100W+ USB PD board under $25 I come across gets put in my shopping cart and I buy them when my other projects aren't taking up my whole budget. Last night I bought 96 A123 ANR26650 cells that are 2500mah but have a continuous discharge rate of 50A. Its a 36V 12S8P LiFeP04 pack that can easily be chopped into 3 pieces to make a 12V 60Ah (54Ah+ guaranteed by seller) battery for......$100. Only need a new BMS because the one it comes with is for 12S obviously. Thats cheaper than any 12V 50Ah LiFeP04 battery available today and it has a theoretical output of 400A continuous. www.ebay.com/itm/285093247320?hash=item4260e1b958:g:6SsAAOSwlQtjkmEs&amdata=enc%3AAQAHAAAAoCrHnFtEcXjpZI3%2F9U0lFxpBz8D759dKQj%2Fd38vVneP7QgQDuhauF%2FdfLJfJGTmyktiTeI5X4kAbtErVK0Q7hIL557Ee%2BC93U47RQB7ketOyIXY%2FkX3rAZ6epHRIuS0nzY7%2Fa4Z0WsdKfbnxeITfeM%2FTA5JQ2YeKXqBtHR1wcm4W1Wpi68gUXbeCP1sLNu90Qj9eg3MmILt3xrAWthOks%2FU%3D%7Ctkp%3ABk9SR76uy9StYQ You can make an offer and I was able to figure the seller has an auto deny/accept amount set to $90 so the total for me was $97 since it has free shipping. Battery Clearinghouse has these cells for the same price (and slightly cheaper for M1A) at the same price but shipping for me was something like $65! Here's the BCH listing of M1A's www.batteryclearinghouse.com/products/a123-26650-lfp-38-4v-96-cell-rack-style-lifep04-pack?variant=39671480320078

@@ericklein5097 your video work has been very good. Close ups are detailed enough that I can see the components. Your format is terrific. I look.forward to every video you put out. You explain electronics in a very concise manner. I learn something new every time you put a video out. Thanks for the tips on batteries. Always need batteries.

Glad I could help!

More to come! ;-)

It is super cool :-) Will be very big in the future

Thank you :-)

@@greatscottlab you’re welcome