LiFePo4 cells , where to buy?

[Yaroooo]

Hello,

I'm looking to build a 4S1P LiFePO₄ battery pack with a capacity of about 2.5Ah to 3Ah. I suppose the 26650 format offers this kind of capacity. The intended use is as a starter battery for a custom bike, so I need cells suitable for high discharge. I already have experience building Li-ion packs, but I would like to switch to a safer chemistry.

First question: is there a reputable, high-quality cell supplier available in Europe or China?

Second question: is there a company that sells these cells and can also assemble them into a custom battery pack?

My budget is around $30, whether home-built or assembled by someone else.

There are plenty of 12V LiFePO₄ batteries on Amazon, but I need mine arranged in a linear configuration rather than a square layout.

 

[j bjork]

NKON probably has cells, I dont think tey build packs though.

 

[E-HP]

Hello,

I'm looking to build a 4S1P LiFePO₄ battery pack with a capacity of about 2.5Ah to 3Ah. I suppose the 26650 format offers this kind of capacity. The intended use is as a starter battery for a custom bike, so I need cells suitable for high discharge. I already have experience building Li-ion packs, but I would like to switch to a safer chemistry.

First question: is there a reputable, high-quality cell supplier available in Europe or China?

Second question: is there a company that sells these cells and can also assemble them into a custom battery pack?

My budget is around $30, whether home-built or assembled by someone else.

There are plenty of 12V LiFePO₄ batteries on Amazon, but I need mine arranged in a linear configuration rather than a square layout.

Where are the batteries on Amazon that can meet your requirements, even if they don't have the right layout?

"High discharge" for LifePO4 is 10C or higher. So you're searching for 3Ah LifePO4 cells that can discharge 30A. Once you identify the possible cells, then you can look for sourcing them.

example:
JGNE 3.2V 26650 3000mAh 30A LiFePO4 Battery (unknown quality)
IFR26650 3.2V 3000mAh 30A High Rate LiFePO4 Battery【VCELL POWER CO., LIMITED】-VCELL POWER CO.,LIMITED (unknown quality)
Pardon Our Interruption... (sony cells, so "high quality" I guess)

 

[j bjork]

To me it seems to make a lot more sense to just get 4 cells from nkon if you are in Europe:

https://www.nkon.nl/en/a123-systems-anr26650m1b-a-grade-3-3v-a-grade.html

No idea if they can handle your starter. It will be hard to make the $30 or even €30 though.