James and all,
I'm struggling to see how the charger works with a BMS in the mix. I understand the BMS sends a signal to the charger to "turn on" when the bank voltage, or SOC drops below a configured level. I can understand if one just uses the drive system to get out and back and then hooks back up to shore power to charge the bank back up. My system is more complex than that, though. I have 3X48V to 12 V DC/DC converters. I have 2X12 VDC refrigerators, and all the other 12 volt stuff that a boat has. Because of this, I'm constantly consuming from the batteries and/or the charger regardless if I'm using the drive system, or not. It seems to me that with a BMS and LiFePO4 cells my batteries would be constantly cycling between fully charged, to somewhat discharged, back to fully charged. Is this OK, or does it count as battery cycles and lead to early demise of the cells? Right now with my FLA bank spending most of the time floating on the charger, all DC loads are just picked up by the charger.
Chris
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Posted by: clh5_98@yahoo.com
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