Disconnect battery when parked?

Your buddy ain't crazy for doing that -- I'd say at least 80% of the car fires we run are caused by electrical problems....and house fires, too, for that matter. I'm just in and out so often that it would be huge PITA to throw the main every single time I left. Haha
We would benefit, because it's 20 minutes to the closest town. 20 minutes there, fart around for a couple or three hours, 20 minutes back. Yeah we'd see some benefit, I imagine. That said, we have all our cats and it'd get pretty hot at this time of year so we caint do that to them.