I have only seen one Burro, it was sitting in the "storage" area at a campground/ gold mine in North Carolina. Door was locked and the windows
covered on the inside. We were told it was not for sale
and that the owner shows up occasionally to pan for gold. The storage area looked more like a trailer boneyard, it was a funky place, but interesting, and real nice people running it. Is it true that Uhaul used modified Burro molds to make their trailers? But back to the original question, since I had removed our inoperative converter I installed a plug on the end of the cushion / storage area near the lower cabinet door and ran two wires to the battery, attached two wires to the male end of the plug from a battery charger, and that's how I would charge the battery. I also installed a battery disconnect switch. By installing the plug I could charge the battery without having to move cushions and open the battery box.