My build thread with LF280K from 18650batterystore and Sun Fun Kits sfk v4 Heated Kit

278ah isn't bad for the first test.
After a few cycles it could improve.
Depending on if the balance improves.

On the 18650batterystore website they show these cells are supposed to be 295 or so range:

But I got only 278.38? Should I run the test again? Or is it bad to full cycle cells.

This 280K nonsense EVE has done is going to cost them in the long run. You can run the test again you may gain half an AH but you are not going to break 280AH most likely.

Do you have a scanner app what date are your cells?

Nevermind I found from one of your pictures, Date Code CB = 2022, October New cell but behaves same as as last year. My thread:

Grade A 280K, 278 is all I got as well, your cell is probably stronger because I was testing directly on the Cell, vs you have a BMS that is probably consuming some AH.

I also got 278, but with SFK 280K cells: https://www.sunfunkits.com/app/ViewBenchmarkDetails?id=6bc89774f0f4 This is how they test, many people are testing this way.

But the grade B 280K are very low 240-260 range.

I got 287 on mine. (LF280K from 18650batterystore)
Two different batches.
Picking up another 48 cells in a couple of weeks.
I would run the test again. How well were they balanced?

Do you have your date codes, did you test on a fan tester, zke or with a BMS and load. The bms with a load is going to give the lowest as you will have some losses from the BMS.

Also double check those QR codes aren’t relasered. Very common these days on EVE units, a printed off piece of paper as a “test report” or custom stickers don’t really matter too much.

Trust, but verify!!!

Quite certain that 18650 is selling real cells, the 280K just doesn't test very high (well documented) but yes OP if you don't mind taking off the black label and showing the area around the QR code it would be helpful.

NOTE: I see your terminals have flat / matte finish vs the knock-off ones EEL is selling so again I"m thinking you are OK as these appear to be real EVE terminals.

NOW with that outta-the-way I have heard, many theories from EVE had a bad batch of cells and decided to pawn them off as grade A with terminals, to hey that is just how high life cycle cells are.

The latest one is that they are releasing version 3 to fix these issues.

But is it really an issue? Watch Andy do a test, he got 279AH form the 280K under a heavy load:

Yes I do agree with you that the 280K with test reports should test a bit higher, but it is what it is.

EastFalcon said:

Ok I think I have everything set! I'm using this heater and a 1500 watt inverter along with the BMS capacity benchmark. Its running now.
Overall the kit was easy to build I think anyone can do it, the only hard parts are the making the cables and crimps.

Click to expand...

cool man. I use mine outside now in the winter to run x-mas lights lol