Combining a 6v bank with existing 12v bank
My new motorhome came equipped with two 12v deep cycle batteries rated at 160ah each that connect to a Xantrex ProWatt 1800 inverter as in the left side of the below diagram. We dry camp quite a b...
Forum Discussion
I have a bank of three 12v AGM's and a bank of two 6V GC2's. The two banks are in separate but close locations (less than 8'). I have a small dorm fridge that operates at 80w. Solar is my primary battery charger.
I decided that I wanted the functionality to switch between banks for charging and supply. I accomplished that by using a distribution panel with three battery disconnect switches.
Schematic:
In real world use, since I can set the charge parameters of the solar controller, both banks can be in parallel for charging and supply. The OP's FLA 12v's may not be as forgiving as the bank of three AGM's or four 6v's may require more of the charge than the two 12v's. This could be done, manually, with disconnect switches or electronically, with a solid state battery isolator. The most elegant solution may be to use six 6v's and sell the two 12v's.
I decided that I wanted the functionality to switch between banks for charging and supply. I accomplished that by using a distribution panel with three battery disconnect switches.
Schematic:
In real world use, since I can set the charge parameters of the solar controller, both banks can be in parallel for charging and supply. The OP's FLA 12v's may not be as forgiving as the bank of three AGM's or four 6v's may require more of the charge than the two 12v's. This could be done, manually, with disconnect switches or electronically, with a solid state battery isolator. The most elegant solution may be to use six 6v's and sell the two 12v's.
