You’re already doing the “best” thing that you can do......drive it occasionally. That is especially good for a motorized unit! If you have a converter with the “float mode”.....leave it plugged in. If you do not have a “float mode” converter, and you must have extended periods without driving the unit....consider a “trickle charger” with the float mode, as to “not” overcharge the battery/ batteries! You could probably get by “without” the float mode type trickle charger if, you leave your battery shut-off switch closed ( power to unit), as your “ghost loads” will possibly draw enough energy to prevent battery overcharge! memtb
