Hello everyone. We have a MultiPlus II with a bank of 4x48V Lithium Iron batteries in parallel (with internal BMS and no communication with the batteries). The batteries are currently at different voltages and we need to get them all up to the same voltage (say, 52.5V) so we can use them. The multiplus has been configured with the correct charge parameters for the batteries. Each battery has its own breaker.
What is the best way to get them charged up using the multiplus?
I was thinking we would switch on just battery #1 (with the breakers off for the other three batteries), let the MultiPlus charge it up, then simply turn OFF battery #1 and switch ON battery #2, let battery #2 charge up, etc and keep doing this for all 4 batteries.
Are there any problems with this? What would you do?