About to buy new calb batteries
And bms....is it safe some reviews
Bad
Will , you buy all the time
You Recommend
So its safe to buy from...
Thanks
Dj/Phil
You really need to watch out. I have also bought lots of stuff from AliExpress without any major difficulties...untill NOW!
I bought 16 cells advertised as "brand new Grade-A 200 Ah CALB LiFePo4". They came with app. 2 months delivery and was packed very nicely 4 in each 4 boxes.
I instantly put them on charge to max 3.65V and the initiated capacity tests.
2 cells had 150Ah, 1 cell only 174Ah, the rest between 158 to 168Ah, and 1 cell was slightly swollen.
Seller tried all kinds of tricks to avoid admitting what was obvious:
Cells could not have been new. CALB would never send out cells so far from specs and certainly never swollen cells.
Swoll cells are directly dangerous potentially catching fire, from dendrites developing inside. This may happen over several years of use.
I don't know about all stores, but many use exactly the same pictures and texts, so difficult to know who is honest and who is not.
If you don't have and understand how to make proper capacity straight after arrival, DON'T BUY. A voltage of 3.3V is no indication of SOC or capacity, it is simply the testing voltage of a partially charged cell.
My experience was with OYE store, stay far away from them !!!
Best regards