Swapping 2-Way Fridge for a 12-Volt When an RV fridge quits, many owners are upgrading to a 12-volt model, but there are a few things you should think about first: ✔️ Bigger Size – Most 12-volt fridges give you more cubic feet than a 2-way. ✔️ Battery Power – A 12-volt fridge runs off your batteries. If you boondock without hookups, you will need solar or a generator to keep it running. ✔️ Wiring Upgrade – Your RV’s factory wiring usually is not heavy enough for a 12-volt fridge, so you will nee