I keep mine plugged in all the time, but its stored in a heated building and I own the building. I keep a "Battery Tender Plus" attached to both the engine and house batteries. Both have blade connectors so the batteries aren't overcharging. They read the charge and adjust accordingly. All the way down to a 2 AMP "storage" charge.
You probably don't want to hear about the kitchen, full service bar with ice maker and theater style popcorn machine, bathroom with shower, tables and chairs for 50 of my closest friends, Dish TV, two pinball machines and a juke box that plays old 45's. And most important, no phone, no windows and no neighbors. So I won't tell you.
PS - As you might have guessed, I'm not married. :)
