![]() It would seem from your description, you have 2 banks with one battery in each bank. ![]() but as long as you are set up properly with a charge relay, the 2 different banks can have a different number of batteries of a different size, as long as it matches the voltage of the other bank. and all the batteries in an individual bank must all be the same size and matched. and all the batteries need to be of the same technology, (agm, wet cell, ect). ![]() The banks do need to be the same voltage. when paralleling 12 volt batts, the voltage stays the same as if you only had one, but the amperage doubles. The reason is, when wiring 6volt batts in series to get 12volts, the, volts will double but the amp hours stay the same as if you only had 1 battery. The ( 2) GC batteries could give you the 300ah if you go to something like the trojan T-1275 12v GC batts at 150 amp hr each, but if you are thinking 6v gc batts, you would need to go to something like a trojan L-16. But, I want to keep my engine battery ad the 12volt cranking battery.Īny suggestions on whether or not this can be done? In this configuration it would be different though. Is this possible? I've also read that both number 1 and number 2 battery banks should be the same voltage and size. One way I could get that with room to spare is to install two 6 volt golf cart baterries to replace my 12volt deep.cycle battery. I've read that for a 1500w inverter, one would need around 300 amp hours. I want to install a few more comforts such as DC fans and a decent inverter, say, 1500w. It's a long trip for us and acnhoring most nights. In the coming season this spring, we are sailing/motoring our Catalina TRBS from Lac Champlain to Ganonaque because we are changing Marinas. The house battery is a typical 12 volt deep cycle marine battery wire about 100 amp hours (AH). One of which is reserved for the engine (battery 1), and the house battery (battery 2).
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