If has the original converter/charger you might consider upgrading to a newer unit that will vary the charge rate depending on the condition of the battery. I killed at least one battery before I changed mine to a newer unit. I have a 1999 Lance 1020...
Having the ability to get a broken rig home is a great reason for having a trailer. My main reason is the price of trailer tires is nothing compared to the price of a good set of off road tires.