How Long Will Rv Fridge Run On Battery. In general A 12V-50Ah battery can run a 2 cubic feet 12V fridge for 35 to 50 hours before its completely depleted. My comparison is similar size about 8 cu ft refrigerators.
In order to operate this battery you either need to be hooked up to shore power as you usually are at a developed campground or running an electricity generator that can charge. A RV refrigerator or a residential refrigerator for Rv consuming around 150 watts while it is running would be drawing around 12 amps hour from a single 12 V battery. The RV furnace will run on 12V power but not the air conditioner.
If you are using a lithium battery you need 5252 Ah battery to run the same fridge for.
A 12 volt fridge freezer will run between 25 and 50 hours on a 12v 100 Ah amp hour LiFEP04 Lithium Iron Phosphate battery. How long will an RV residential fridge run on battery. For a lead-acid battery the efficiency is 80 for lithium this is 99. The only time we ever run the fridge on 12 volts is while driving down the road.
