this is a puzzler here. I have a 48V bank of Battleborn lifePO4 batteries connected to a huge 10kva inverter.
When I tried to charge one of the 12v batteries while the pack was still connected to the inverter, the charger went berserk immediately, I don't understand why this happened.
When I had LEAD ACID batteries (same 48V bank), connected to a smaller inverter, I used to be able to charge any of the single 12v batteries while the bank was still active on the inverter. So, lets say the inverter had finished charging and the pack wasn't balanced, I used to be able to just pop on the 12v charger to bring up the lowest in the pack without having to disassemble anything.
Why can't I do that now? It's a simple series connection, but could the fact that it's a huge inverter be playing a role?
The batteries are wired to a start cap before the inverter, I believe it's called a CLS500 and the negative is wired to a grounding rod buried underground.
For those reasons, I just don't feel comfortable having to disconnect the batteries every time i wan't to balance them out.
Please someone explain to me why I can't charge them individually while they are still connected. I can't afford to lose my new charger to the same failure as I am in Nigeria and it will take ages to get a new one if I mess this up.