Hi Harvey,
We go out for several weeks at a time, and it's nice being able to take frozen vegetables and meat in it. And Ice Cream! Lol. We can also make ice for our drinks (usually tea or soda). It's been great not having to worry about buying ice every few days as we did with our old cooler. I don't believe the amperage draw is more than 4 amps max, and we keep it around 8-10 degrees. (At Powell, or in the really hot weather, the same setting will allow it to get up to mid 20's, but that's still keeping things frozen.) At home when we first load it, I'll turn it on maximum, and it'll get down to -7 or a bit colder. We used it once as just a refrigerator on our trip out west last Thanksgiving (without the boat). We have the 40 qt I believe, and it holds more than we thought it would. You just have to figure out the right size packages and how to load it. This last trip we are returning from, we had 3 cartons of ice cream (1/2 g?), extra cheese, lunch meat, hamburger patties, chicken, brats, and vegetables in it. My wife usually tapes a list on top of it with what's loaded in it, then crosses the items off the list as they are removed. Just an easy way to keep inventory of what we have. BTW, on the 25, we keep it in the cockpit. I have 12vt plugs in the side compartments that I can plug it into. On the 22, when I was solo on the Alaska trip, I sat it in the front passenger seat. I made a board to go between the seat bench and the berth bulkhead, that I could pin down, and then I had cut some notches in it to attach a strap, so the cooler was held down securely. I had an accessory plug nearby that I could plug it into. This not only kept it out of the way in the cockpit, but helped balance the boat laterally. Colby