We try to pre-chill the refrigerator before leaving on 110 volt and then switch over to 12 volt when we close up. Enroute if we have a long stop we unplug the TM from the TV so as to not deplete the TV battery. We also stick several of those plastic "blue ice" blocks in the freezer compartment. This has worked well for us. We always travel with a cooler in the TV so every day we swap the blue ice blocks from the cooler for the ones in the TM freezer and never have to buy ice enroute. - camp2canoe
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