I don't know the answer to your question, but it reminded me of an "ice chest" I saw at WM that was battery operated. That just might be the ticket.

If I was going to attempt to use a 110v on my 'toon, I'd probably use it with two large capacity 12v batteries...one at a time (for space considerations).

I have a 400 watt inverter that I use for running a small fan on those really hot days. I run it off my cranking battery.

I know there are folks on here that can calculate the drain of the frig when you're able to give them the additional information. I'd be interested to know as well.

I think I might just look into that battery-operated ice chest myself.

aj