Plugged in or out

A lot of the answers seem to depend on the location. Here in PA my fifth-wheel is winterized and not going to be used for the next 5 months. The battery is removed and sitting in my insulated garage on a board right behind my motorcycle that most likely won't see the road for the same amount of time. I have a maintainer/charger that gets moved between the two every two weeks over the winter. The breakers on the RV supply post are both off and the
rv cord is stowed out of the weather.