Post #9412

More lessons. Pay attention boy I'm talking to you. When I got the system up and running again, 3 batteries were at 0% SOC 46v. And one that had tripped it self lastnight was at 53v. When I allowed the BMS to connect to the other three, there was ~360amps flowing out of that one pack. JKBMS caught it as it was supposed to and disabled discharge within 3 seconds. So I left discharge disabled and allowed the other batteries to charge to the voltage of that lone pack and THEN enabled discharge on it once again. Now the opposite situation is that you have 3 strong packs and introduce a pack at a lower voltage into the system. In this case, JKBMS would see high charge amps and would switch on it's current limiter. That pack would safely charge at 10amp for the rest of the day until it caught the others. So do NOT introduce a single higher voltage pack into a group. But it is safe to connect a lower voltage pack to a group as along as the BMS has charge current limiting like JK BMS does.