Jean got the battery cozy made using thinsulate; it has fabric on both sides so it doesn't snag on things as easily as the stuff we used on the walls. It turned out really nice. I'll have to keep an eye on the battery temperature in hot weather when there's a heavy current draw, I don't want it to overheat. The cozy might be a winter-use-only item. It looks great and will work a lot better than the moving blanket.
From this:

To this:

Much nicer!
Bruce