Absorption fridge 2 way vs 3 way

valhalla360 wrote:

JRscooby wrote:
The only power supply to the 12 element of my fridge is the "charge" line from TV. We always camp with power, so the fridge is on 120 most of time. I'm working to hook a 1 lb bottle to the fridge so I could light it on the rare occasion we spend time stopped while traveling.
BTW, I turn my fridge on 12 V, drive 4 hrs, and inside temp will be 30*+ below outside temp. when we set up.
OP, I think if I was setting up a rig to wild camped I would look long and hard at a 12V compressor fridge. And go with the chest type, so your cold air doesn't run out on the floor every time you open the door. From what I have seen it doesn't take a lot of solar/battery to run them

Between the trailer battery and the slow charge from the hitch umbilical, for a few hours it can keep up.

I think you mis-read what I typed.

"The only power supply to the 12 element of my fridge is the "charge" line from TV."

I have 10 ga wire to the plug back of TV, to the junction block where I can remove 7 nuts and take off light cord, then to the heating switch/heater on fridge. The converter or battery is only involved because they use the same ground.
My camper stays in shade, but the only electricity in it while stored is the batteries I leave in flashlites. When we are ready to go camping logic tells me the inside of the fridge will be close to the average outside temp for the last few days. I take battery out of DW's car, hook it up in box. Ground to frame, + to a 40 amp breaker. Hot side of breaker feeds brakeaway, protected feeds winch that lifts the roof. Does not feed the fridge. Driving a few hours will drop the inside temp well below the morning temp. This is somewhat more than "keeping up" When setting up I replace the bag of charcoal with a frozen gallon jug of water, and the condiments that don't need a lot of cooling. Buy the time we eat leftovers from home for supper, the folding cooler is MT. By breakfast I can put anything that needs refrigerated in there and the temp will stay below 40*

While typically would just use propane on the road, a few times we've had to turn it off and 3-4hours later, the freezer was still solid frozen and the stuff in the fridge was still cold.

When our simple camper left the factory the only things that used propane was the stove and fridge. And after we went a couple of years without using the stove, it got stored in basement. Couple more years "why am I hauling this near 40 lbs on the tongue?" Winter trips when I load the propane heaters, I load the propane.
We don't all camp the same