Battery Hook-up Question

[ianmac23]

I am building a new battery box for the two golf cart batteries that I just purchased. I also adding a marine battery cut off switch. My question is if I disconnect the battery once the RV is plugged in to shore power will the 12v items on the RV still work? Can I use my good portable 3-stage charger with the positive hooked to the RV and the negative disconnected?

Thanks for the help
Ian

[prichardson]

Why would you want to disconnect the batteries when on shore power? Some of the on board chargers(converter) will carry the 12V systems; however, for most it is better that they see a battery. A separate charger would need both its + and - connected to the battery bank.