Charging LiFePo4 in a hybrid system
I am using a solar/battery energy system that is made up of: 6.2KW of solar panels, 800AH of LiFePo4 batteries (15S2p of CALB 400AH), Solark 8K controller, 10 circuit transfer switch). Ironically, due to the storm system that came through here yesterday, our home was without grid power for more that 8 hours and the 6 circuits supplied by the solar/battery system provided power through the transfer switch as designed, so for a time I was "off-grid" and on batteries&/solar power.
Here is my question: Can I charge individual batteries if their voltage is below a defined value while the batteries are still connected in the string?
I asked SolArk about charging the bank while the controller was connected to the batteries and they indicated that was not a problem. In the charge-phase, the SolArk does, in fact charge the entire bank.
My questions are: 1) could I charge an individual cell in situ, 2) would there be any benefit to charging the individual cells?
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