Thanks so much I guess I should have researched this sooner we have had the RV for years now LOL. I think we have gone through at least three maybe four or more house batteries in 8 years. I am reading those posted threads too.
I am curious though, why don't we have this problem with the Engine battery? Because we let the RV sit several months over the winter and it starts up just fine in the spring no problem. Is there a difference between the two in terms of wiring etc?
I am assuming that the main engine battery does not have parasitic loading problem that a house battery has that Dakzuki mentions?