I have a class C RV on a Mercedes sprinter chassis. In a normal year I take it out for month long trips probably 3 times a year. In 2020 I haven’t drive it at all (last trip was Oct of 2019). The battery is dead and I’ll replace that (I’ve already done that once in 2020). I have concerns about just taking it out for a long trip after sitting for so long. Has anyone used their RV after a long sitting period? Experiences? Problems? Suggestions? Am I just being paranoid? I imagine RVs are meant to sit for extended periods.