I have just purchased some 12v lithium batteries that have internal battery balancers but they do not connect to each other. There is two 12v batteries in series for a 24v system. In total 4 batteries 200ah each so 24v system with 400ah. As the internal BMS dont talk to each other I have installed a balancer.
System is charged from victrom MPPT solar charger with about 27amps of pannels, set to lithium
Is this a good or bad idea?
I have been getting error higher voltage on lower battery but if remove two batteries it seems to work normally, Do I get a second balancer and parallel it or remove the victron balancer from the system?