So after doing some research it seems like to add a 2nd house battery all I have to do is wire the new battery in parallel to the existing house battery, and I dont need to change my switch at all. It will treat both batteries as basically one large capacity battery. Is that correct?
Also, should I get a 2 bank or 3 bank charger for them? Since they are wired in parallel should I let the charger bring them up to 100% together, or have a 3 bank and charge them independently.
2013 276 Cuddy ~ 350 MAG / B3