Hello,
I was to make conversion on Daewoo Matiz to electric. EV work on 48V 16s CATL battery,302A, with Daly BMS 300A. Everything was ok since have trouble with battery. When its start charging with ~SOC 30% , all 16 cells going around 3.350V (+-0.05). After 30-60min some batteries, 4 pcs going to 4 to 4.2V while charging (Attach screenshot). After that BMS turn off charging, suppose some cell is full charged. Result is that I can't fully charge the battery and I haven't idea what is going wrong. Maybe need manually to charge, with 12V charger 4 cells?
If anyone can help me, I would be grateful
Best regards,