Thank you guys :).
Yes, I have no propane systems. (Except for a backpacking stove that uses those little canisters.)
My mini freezer keeps food frozen for 3.5 days when unplugged (opened once or twice a day, normal temps). I am thinking if I can give it a cooling boost for an hour or so when driving it might be good for longer/hotter.
I am not planning to run it off batteries when parked. Solar, maybe sometimes, if batteries are full and the solar is just sitting there unused.
Of course, plugging freezer in while driving and forgetting to unplug it IS something I could do. Will try not to. Maybe I need an inline timer switch!
Actually, that is not a bad idea for many things. I wonder if I can find a 12v gazillion amp one.
Pianotuna, I have not installed the alternator stuff yet. Would you care to recommend a gauge for me? 120amp isolator, about 6 feet to house batt and 12 to ice machine. I'm jealous of jrnymn's roll of 0 gauge :).
3/4 timing in a DIY van conversion. Backroads, mountains, boondocking, sometimes big cities for a change of pace.