[Motor31]

I went with two 12 volt batteries. I wanted the extra amps and in case one battery failed I could simply remove it from the circuit and use the remaining battery until I was at a location to replace them both if I had to. I couldn't do that if I relied on two 6 volt batteries.

Our dry camping is minimal and the two 12 volt batteries insure we have plenty of power for the furnace during a cold winter night.