12v and 48v LiFePO4 26650 cell building kits

[@edwardvanhazendonk]

Cool, your modulair thoughtprocess keeps giving us more options. And it's KISS so that makes it very worthwhile. Thanks for sharing and creating.

[@robertvillafan1220]

Dude turned complicated electronics into simple Legos. That's awesome

[@AnthonyGoodley]

I'd love to see you make these boards for Headways. Extra bonus IF the traces, BMS, connections etc can handle those massive amps.

[@Nun_ya_Biz_Jack]

This man is bringing complex projects to the masses! Just subscribed.

[@edwardeagloski7763]

On the 12 volt battery build, why was the right most cell brick cabling wire not connected / inserted on the top row?

[@gzcwnk]

I like lifepo4 in Powerwalls. That 48v board in particular is just brilliant.

[@ricdesan6714]

This is a huge step in the right direction to using LiFEPO be would ultimately be ideal if you could adapt the PCB to a 24v setup design as well. You designed so many other systems in 18560 land to 24v

[@ward26102]

I know I'm a newb, but it would be great to have some 101-level application-specific builds. For example, how to build a complete 12v pack to replace a typical automotive deep-cycle style battery, including hooking up to inverter, and charging. And charging with solar. I'm wanting to replace typical deep cycle battery in RV / camping application. Thank you for your videos and furthering the cause of rechargeable battery re-use.

[@AkhonaNgquba]

You need a way to hold the bottom part together. I see the board flexes when you lift it up. A blank (unprinted) circuit board will do. This is super easy. You habe really made building batteries super easy. Brilliant

[@MarkBuildGood]

Have you thought about making a build that fits into a standard server rack? I think using some off the shelf parts would make everything look clean and more professional. Most server UPS’s are lead acid so it would be nice to have something lithium thats custom. Using a server rack form factor would make it easy to assemble/customize with different cooling solutions and case options. Rugged server cases (waterproof) exist for off grid & emergency response applications.

[@CaptZenPetabyte]

This looks perfect for home EVs. Thanks for all your hard work & design.

[@edbloom4897]

AWESOME!!!!!! I have been waiting to see the board in more detail.

[@stephenl7950]

Have you thought about opensourcing the original files used to make the PCBs? I see we can order based off of what you have designed, but curious if you have thought about providing the orignal files.

[@mikejf4377]

Could you put more BMS to multiply the output current? Nice setup.

[@jehugarcia]

Yes but you’ll need more battery modules as they only do 5a each

[@mikejf4377]

@@jehugarcia OK, are those batteries box of 16 or 15 as in your listing. Thanks for responding.

[@stonkin5380]

What about fusing? Would be good to build a board with inbuilt glass fuses? I like these packs but don't like no fuses...

[@shadowmoon7763]

Very creative, great job. I have several of your 10x 24v packs and they have held up well. Would you please consider the same layout a 4S 12v version for 18650's. Keep up the great work.

[@shize9ine]

They already exist on ebay

[@jacelandadventures1523]

I’m thinking the 18650 cells nominal voltage is too high 3.7 volts per cell to series 4 together for 12 volt accessories 3.7 x 4 = 14.8v Where the 26650 nominal voltage is 3.3 per cell taking 4 in series = 13.2 this is a more suitable voltage for 12 volt accessories! I might be wrong but I think this is the reasoning!

[@JN.0_o]

It looks great, but are you sure about putting up to 100A through that PCB? Seems like you're really pushing it

[@sebrassino]

Let alone the risk of loose bolts and bad connections there. Or them getting lose after a while. I like the concept. But you have to be careful of course

[@tonycarter3496]

As someone who designs PCB's I think your correct. Nice idea, but potentially dangerous. And very costly!!

[@francoisdev]

Can you use this to stock solar energy?

[@TheMinkash]

Great video thanks, I'm trying to build a battery pack for my dashcam, where can I find an enclosure box that can be safely installed under my dash, thanks

[@willienelsoncash]

Where can I find these boards in 2024?? I picked up 4 packs of the a123 26650 and would really benefit from the boards!

[@tonylorentzen]

Are you still offering the Gerber files for download somewhere? Maybe for a small fee?

[@chefbperez]

How can I use the same system to build a 24v system?

[@validus22]

Do you plan to make the BMS board available on PCBWay like the cMax 48v projects? It would be nice to be able to buy the modules and buy/build the BMS board separately. Especially since the 48v master kit is sold out already.

[@ToddESingleton]

You are an education. Thank you for your time and talents.

[@mysterytechknowledge3664]

@ jehugarcia Is there a safe and easy way to make these or Headway cells into a motorcycle battery?

[@jimmac521]

I've been running my lawn tractor on headways for two years as an experiment... so far so good.

[@recoblade1465]

You can buy a lifepo4 motorcycle battery for $100ish. Just took a few salvage ones apart for cells they use pouch cells though.

[@LoremIpsum1970]

This is something very interesting ... but not available to the UK... is that going to change?

[@MaxGoddur]

Have not watched the video yet like to save them for evening viewing. Will take a chance you did not answer this question. Do you have a pack @ 54.6v with an output of 11.4Ah. It would replace a 13s4p pack?

[@lewicheung]

Jehu. Hopefully you can make one of these for your 7S 18650 PCB's. I would love to get some for those boards.

[@jehugarcia]

Check Jag35.com

[@lewicheung]

@@jehugarcia I don't see them there. I see the 7S PCB boards but not the board as shown in this video for the 7S boards to parallel or series the 7S PCBs. Only see the 12 and the 48 volt as shown in the video.

[@shize9ine]

The limiting factor is the bms and pcb traces IMO. 60amps is pretty low for most 48v applications. 5amps per board is too low when 26650 LiFePO4 A123 cells are rated 70amps continuous and 140amps pulse. Would be ideal if each pcb had a 4s BMS and the final top board would have a 200amp BMS with 12v or 5v break outs for fans and other monitors - balancing all the individual PCB’s. Then you wouldn’t have to worry about individual balance or pack to pack balance. I’d buy something like that in a second.

[@jehugarcia]

Holders can only handle 5A unfortunately, for high power applications you have to weld cells

[@shize9ine]

@@jehugarcia Would you ever consider producing a 'Vruzend' style soderless kit for 26650's?

[@ricdesan6714]

@@shize9ine This would be ideal to utilize ALL the benefits of the improved LiFEPO cell tech. Welding 18650 is somewhat a waste when they dont last thousands of cycles.

[@SheikhN-bible-syndrome]

@@shize9ine do what now? I've got 98 a124 cells waiting on me to make a 12v battery out of them I just need to fine a good way to connect them

[@WaterCoolFool]

Could I use the x5 kit for my Bluetooth speaker build? 12v 15amp is what i need to power it

[@G7MJV]

Are the gerber files available for these? I'm in europe and would like to make one

[@Schlaegel]

Can the traces get close to the amps of one XT60?

[@FarmerYuHaden]

You have made it so easy

[@josephgomes8543]

I bought the 26650 kit for 12V ,4s-2p, and i can't find that neat BMS that you show in the video on your site. Am I missing something or are they sold out? BTW I love the way they go together and stack so nicely. I'm putting it together for portable power for ham radio use.

[@jameswilson1277]

The last battery packs ribbon cable was not hooked up to the PCB board how are you balancing those cells?

[@integlikewhoa]

I was wondering the same why the last top board wasn't connected.

[@solarpumpteam5838]

Where to find those accessories?

[@FLOODK9]

Jesús where do I get these supplies??

[@jay-rus4437]

Would like some input on this. We are preparing for phase II of our solar system plan, and would consider this setup if it makes finance sense. Really like your videos and products, but have to admit that it seems the cost of building one of these is as much as an SOK battery. Maybe if someone has specific size requirements for their application?

[@recoblade1465]

His pcb kits are fore people that dont want to do all the work required to fully DIY there own. Is it cheaper to go full DIY sure I have $400 worth of cells and cell holders $10 of nickel strip a $12 case and a bms that will ether be $68 straight from China $120 same as China but verified and here in USA $600 best option but pricey. So $600-$700 150A lifepo4 battery but 5hr of build time on the first one. Or $600 for his pcb plus cell to populate it and a case and maybe 2hr of build time.

[@jay-rus4437]

@@recoblade1465 …..yeah. Thats about what I was seeing too. SOK 100ah LiFePo4 is $570 delivered. Really good quality batteries too. Completely serviceable. Im not hating on his work though. More options are always better, and the market will dictate if his product and pricing are acceptable, which it seems that it is.

[@oliverschurr46]

hi jehu, why didn't you connect the last right-most ribbon cable on top?

[@jehugarcia]

I didn’t have a cable

[@gilbreathca]

Is there a low temp cutoff on the BMS?

[@jehugarcia]

No

[@bucharestcartraffic]

does it work for UPS'es ?

[@divya_]

Sold out already. Print more PCBs please!

[@jehugarcia]

Ordered

[@LePhucHauSaDec]

Hi! 4s x 4 = 16s = 48V but i want 4s x 5 = 20s = 60v ?

[@MrLandphill]

I am trying to "build a better battery" for my 24v Neuton CE 5.3 battery lawnmower. it currently uses 2 12v 10ah lead acid batteries, the charger has no brains, it just dumps 24v 1000 ma to the batteries. the motor specs are RPM 4300 Tip Speed 16,000 ft./min. AMP Idle 4 - 5 AMP Cutting 8 - 10 Size 500W, 24V DC/32 Amp Noise Under 80 Decibels The battery pack is made up with the 2 12v 10ah batteries oriented side by side. do you think a couple of your battery stacks would fit side by side in the space of 2 12v 10ah batts? Dimension(LxWxH) 151mm (5.91") x 98mm (3.86") x 95mm (3.74") each? thanks Phill also should the current charger work?

[@ivanluhi]

If I may ask, what are the dimensions of the cell and BMS modules?

[@PremierWearHub]

How do you change the pack without changing the battery?

[@FarmerYuHaden]

Lipo would be nice also

[@recoblade1465]

Lifepo4 is safer not as energy dense but safer

[@yanndaigneault6704]

Hi, can the BMS board/kit be used with Headway cells ?

[@recoblade1465]

No headway cell are easier with the cell holders and included busbars plus they put out 30A- 200A depending on the cell pcb would have to be thick.

[@ryanmeyer2118]

I have an ample supply of new 26650 cells that I intend to use. Is there any way to order these boards & BMS unpopulated?

[@davidzelkowski9948]

Are the 48 volt boards really sold out or just not available yet?

[@RavenousMarmot]

Is it possible to order a 48v kit thats 100a or 200a capable?

[@jehugarcia]

You would have to use two master board kits

[@RavenousMarmot]

@@jehugarcia thank you sir! Any ballparks for availability yet?

[@thadoviatt8087]

Are these boards physically smaller than the 7s 18650 li-ion boards?

[@TecSanento]

I bet This is Only Version one of the System ?because it looks less sophisticated then the 7s 18650 Module - And you should Definitely put prominent Labellings of the System Limits onto it :)

[@georgegreer9260]

Can these boards be purchased unpopulated?

[@pinoyskat]

Is it posible to use 18650 cell.?? Can i buy this board in Europe maybe a link.

[@recoblade1465]

He makes an 18650 board its on his website thats what he started with

[@pinoyskat]

@@recoblade1465 i live in Europe and he doesnt ship outside US. First time he make a 12v pack.

[@recoblade1465]

Oh your looking for 12v 18650 lifepo4 board depending on how big you want to make it you might want to look into vruzend.com/product/vruzend-battery-kit-v2-0/ there a no weld option you would still need a bms or a kweld if its a bigger project.

[@draglorde]

you do not need certification before selling this? What happens if someone starts a fire and says that it was due to your boards? (I hope that it never happens)

[@earthenergyhex]

ho many ah's per stack?

[@recoblade1465]

Depends on the cells you use I think this build is with Trojan cells there 3.7A cells 4 per stack 14.8Ah. The K2 he sells are 3.2Ah so 12.8Ah he also sells 3.3Ah cells 13.2Ah per stack

[@TheWhiteeagleX]

Whats the total capacity?

[@GroovyVideo2]

make standoff into bus bar - ?

[@5UPRAH]

20 amps through that ribbon cable???

[@majostm]

I am interested in building a 48v pack, but I am just starting to learn about all this and a little confused about the power ratings. For the 12v version of this kit, 80A output make sense to me since each stack increases the max potential current by 20A. However, wouldn't the max amperage drop down 20A for the 48v pack since it increases the voltage and lowers the current? What am I missing here? EDIT: I ask this because the website lists both kits as 100A and I want to make sure I understand the rating correctly. (Cell capacity being variable, I realize the 20A is max potential for the boards, not the assembled pack.)

[@noah786]

How many watt hours is that 12 volt system?

[@recoblade1465]

Trojan cells are 3700mah so each board is 12v actually 14.2v at 3700mah there are 16 boards so 3700mha or 3.7Ah times 16 because that's how many there are in parallel. 3.7×16= 59.2Ah multiply amps by volts and you get watts 59.2Ah×14.2volts=840.64 watts

[@igorkvachun3572]

Yes 👍 Akb 🔋 ⚡

[@webslinger2011]

This could potentially power an nvidia jetson single board pc + robot.

[@aaronbinder6903]

So easy even a caveman can do it lol.

[@rodsjohnson831]

48v kits are sold out.

[@mulayaninc.7466]

Maybe you can raffle that out as a giveaway 😊👌

[@jjeshop]

Wow

[@ambersmith6517]

nice

[@chrislincoln489]

These boards cost $400.without cells, I can get a $399 TalentCell 12V 100Ah LiFePO4 for that. This would be cheaper.

[@62arts]

You really, really need a common bottom plate for this type of setup. Just saying

[@garydudelston]

Using 26650's is wasting money and time. You get no more power than you would by using 18650's. All 26650 have a 18650 packed inside the 26650 case.

[@jehugarcia]

Nope

[@johnreyfrancisco4373]

Promotion level:

[@FLOODK9]

I wish I was rich…

[@dianeohmacht3525]

Lost my boyfriend last year because of these battery pack he made it cause a house fire he could not walk out we was together for 13 yrs also lost 2 cats in fire as well September will be a year since house fire l got them out on porch but they exploding as I was removing from house

[@sidjones-randomstuff2058]

Ummmm....wow. Is this post for real? If it is, this is very sad. So sorry for your loss. 😢

[@dianeohmacht3525]

@@sidjones-randomstuff2058 yes it really happen i was lucky to get out in time fire happen september 4 th last year fire dept had someone removed them

[@sidjones-randomstuff2058]

@@dianeohmacht3525 I am so sorry. Best of luck to you always.

[@rodsjohnson831]

Was it this system? Or a different type?

[@dianeohmacht3525]

@@rodsjohnson831 it was different type he also made them himself they was pink batteries also