dismounted all cells, connect them in parallel leave them for one night, then charge this whole parallel unit until its full (3.68V). I use a Longwei 30V/10A power supply and adjust the voltage charge to reach 3.68V (this value I set on my DALY BMS as well - "cell volt high protect")
I'm not sure they were EVE cells, because there are no labels at all on them. If you are right, so my assumption is correct: these are EVE bad quality cells, don't meet the QC and EVE discarded them. The seller collects them, put another name on them, which is LiitoKala, and sells them on...
>>they want YOU to pay FULL shipping to return everything hehe
That is really their dirty trick. They of course can cheat customer ONE time, but not second time. I post this thread to warn other people.
Just found this thread.
Yes, BE AWARE OF those brands, especially the unhonest sellers. They put photo of good quality on Aliexpress with QR code, but ship to customers low grade, the one that manufacturer(s) get rid of.
I got Liitoka 280Ah cells, but real capacity of cell is around 229Ah
Do your 310 Ah Liitokala come with QR code on top of each cell?
I think cells passing the QC having QR code. Mine have no QR code.
I configure my DALY 150A with 280Ah
Pix#5 illustrates for my low load discharge. The time I took that photo was at the middle, you can see passing time on the last line.
I charge ALL cells with BMS. Testing each cell cost too much time, but of course I support your approach. The attached photo when cable is not attached to BMS yet.
It makes sense and I understand that, but your comment is valid. That why I decided to do two more tests after the first test with low capacity: total full 3 tests and observed carefully all cells during charge and discharge processes. I saw the diff voltages all over cells from cell 1 to 8...
I don't really understand what you mean "get a capacity reading from the BMS". The capacity I have is on the DC digital voltmeter 300V/100A tester, see photos on my first post. After the SOC 100% I measured all cells, the whole set but that doesn't provide much valid information about the...
I have just received 8 cells LiitoKala 3.2V 280Ah LifFePo4 Prismatic cells.
https://www.aliexpress.com/item/4001250575534.html?spm=a2g0s.9042311.0.0.7eff4c4dANBH35
It took some time for shipping to Canada. All cells are well packing, brand new, no complains.
I did three tests of full charge and...
further technical details: due to cell bad quality, different voltage of cells reach the threshold set in the DALY BMS near the full charge and discharge. See photos attached