LiFePO4 26650 cells, are these good for high powered ebike battery build?

[Two4Seven SuprDan]

on sale with tons of 18650 at jag35.com i was wondering if anyone had any experience, this battery he made out of 32 of these took out a 3000w inverter with a 2000w heater on full blast so i figured if it fits it might be a fast charger.....

 

[Hummina Shadeeba]

Lifepo4 is my favorite. Batteryhookup also has some good deals and always changing

 

[999zip999]

What brand if A123 great.

 

[Hillhater]

Lifepo4 ,of the correct type, can work for Ebike,
BUT,..it will weigh more and take up more space than an equivalent capacity/performance LiPo/LiCo pack.!

 

[lnanek]

That's true. It's nice that it's a safer chemistry as well, though. Especially when buying used/reclaimed cells like those two sites sell. Keeping packs of used cells balanced is more difficult.

 

[Hummina Shadeeba]

these seem the best available for the cost. Almost the highest capacity. Not as powerful as many other lifepo4 though.

16x 3.2v 3700mah 11.84wh 26650 Lifepo4 Cells

These batteries have never been used and were overstock from a larger project. We professionally test every battery for capacity and internal resistance to confirm they test like new. They are all resting near 3.3v as well which makes it super convenient to just build them into whatever pack you...

batteryhookup.com

Lifepo4 has a nice straight discharge curve and isn’t reducing voltage as it discharges. It keeps consistent voltage and therefore power and speed all the way until empty. Much nicer performance in that way than other chemistry


When it’s on ur bike u don’t have to carry it


They can be fully discharged (by mistake) and be revived and good for Diy klutzes.

They don’t give a burst max current rating which is worth knowing but I guess can be assumed to some degree based on other similar stat lifepo4 cells

 

[Two4Seven SuprDan]

USED HEADWAY 38120 HP 3.2V 8AH LIFEPO4 BATTERY 5 bucks for these big monsters... i had no idea there was a sale either!

 

[Hummina Shadeeba]

That seems a possibly great deal. If only they would assure a certain capacity and “used” and “none dead” is very vague

 

[Two4Seven SuprDan]

5 bucks a pop if theres 4 bad ones in the lot u just paid for one new one, buy new ones at 15-20 each instead? havent had any bad luck with reclaimed cells, just know what your getting and don't expect low current cells to do anything more than that, these are high current cells that can melt anything with minimal effort and are also easy to assemble bus bars with screws. ill pick up a few next week and give a in hands feedback on it..
but
USED HEADWAY 38120 HP 3.2V 8AH LIFEPO4 BATTERY
are not 26650 cells theyre big coke can looking things....
names are confusing the 26650 is 26mm wide by 65mm tall and the 38120 is 120 mm tall by 38mm wide

 

[Hummina Shadeeba]

My preference would be the 26650 smaller size than the maybe questionable quality bigger headway but even the smaller wouldn’t give the power I’d need. I imagine the headway could give huge power regardless of their state of use
But sounds like u know what ur doing and what u want already

 

[Two4Seven SuprDan]

yeah i kinda like doing stuff that green in return makes the planet better, im gonna need a bunch more batteries anywaYS and its ridiculous how little snow we got here in ct this year, tell me global warming aint real.....
i absolutely agree that new is more reliable and fail proof but even a battery thats lived up its life on a high discharge plane can still power some flashlights later down the road. and i like those headways for big subwoofer applications too but i think next ill be seeing who wants to go in on a auction for some second hand ev cells by the pallet....