potter water
New member
Your on board charger needs to be a two bank charger if you want to continue using mismatched batteries. And you need to have a VSR in the system if you want to charge mismatched batteries with your engine alternator. Simple as that. A two bank charger is basically two battery chargers in one, one set of leads for each of the two banks and batteries.
I couldn't agree more with simplicity. My boat has two Suzies with separate start batteries. Either Suzie will charge the house battery through the voltage sensitive relay controls. So, each motor, port and starboard has a separate battery on or off switch. There is a separate house battery on or off switch, and a fourth switch that ties all three batteries together in parallel for emergencies. It is a very complicated system with several VSR's, dual bank charger and so on, and about the time it fails, I'll probably put a much simpler system in, more manual than automatic as it currently is.
However, so far, the whole complicated system works and everything charges, etc.
I couldn't agree more with simplicity. My boat has two Suzies with separate start batteries. Either Suzie will charge the house battery through the voltage sensitive relay controls. So, each motor, port and starboard has a separate battery on or off switch. There is a separate house battery on or off switch, and a fourth switch that ties all three batteries together in parallel for emergencies. It is a very complicated system with several VSR's, dual bank charger and so on, and about the time it fails, I'll probably put a much simpler system in, more manual than automatic as it currently is.
However, so far, the whole complicated system works and everything charges, etc.