We are on our 4th. MH and I leave the batteries in the MH and run nothing during the winter. I put StaBil in the gas tank and run the gen. for 1/2 hr. before putting it in storage. We leave the bathroom vent open all the time. Winter is the lowest humidity of the year in many parts of the country, unlike the wet Northwest. I turn off the batteries but leave them all in place. The step will still work that way. We do store inside but never have a problem in the Spring. This MH has been doing that for 9 years now with no problem.
