I have a Li-Ion battery pack made with twelve 18650 in a 3S4P configuration, using an off the self Battery Management System (rated for 25A), that I purchased on aliexpress. I tried to charge it using a 5A, charger, at 12.6V, But the problem is, the BMS seems to max out the current supply and the charger is blown off. I have following questions:
- Should I supply more than 12.6V to charge the pack? Will this reduce the current drawn?
- Is there a way to limit the current drawn by the BMS circuit externally?