So I got two chargers for my 6S4P pack. One slow at 2amps and one fast at 5amps. I bought them from aliexpress, so I wanted to double check them to make sure they’re properly rated.
Slow charger: 25.37V and 2amps
Fast charger: 25.18V and 8amps.
Here are some pictures too, the Dymo tape is what I got when I tested them with my multimeter.
The battery and BMS.
My questions are:
Is it safe to use the slow charger at 2amps when the voltage is 25.37V? That could put my cells at 4.2283V if the BMS doesn’t stop it.
The fast charger at 8amps seem to have a good voltage, but if my calculations(8amps / number of cells in one pack which is 4 = 2amps per cell) is correct then charging a 2500mah cell at 2amps is barely on the safe side of things. Should I just scrap that charger?
If I’ve missed anything or my math is off, please correct me!