Additional house battery wiring
My ‘67 38 Sedan has two engine batteries and one generator start battery; no house battery. I assume one of the engine batteries runs the 12 volt stuff in the boat. These batteries are charged by a ProMariner three bank charger when on shore power.
I have removed the old 120 volt fridge and purchased a 12v / 120v fridge, so I don’t have to run the generator to keep the fridge cold when underway. I want to add two house batteries in parallel to power the fridge, with an additional ProMariner two bank charger for charging when on shore power. My question is how to charge these batteries off the engine alternator(s) when running?
Thanks for any advice.
Jim
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Yes John, good stuff. I have the two dedicated engine batteries and the genset on a 3 bank 30A charger that is only used periodically in the off season to keep them topped off. And then there’s the 55A IOTA just for the house bank. The other thing that really adds to the setup is the meters displaying battery terminal voltage, it really keeps you in the know that all is functioning as it should. Here’s an article I put together on that with photos of my panels, meters and the ACR control switch and LED indicator.
https://www.sbmar.com/articles/installing-digital-volt-meters-dvm-boat/