Many RV refrigerators run off three main forms of power. These include electricity, battery and LP gas. However, since the 1980s, most manufacturers started only offering two of the three main power sources – LP gas and 120 volt electricity – as options to power refrigerator units.
More recently, manufacturers have gone away from using 12 volt battery power to fuel RV refrigerators and are now mostly offering LP gas and 120 volt systems. This is primarily because the RV refrigerators operating off of 12 volt would drain the battery down within six to eight hours of use.
For larger units, it is still possible to use a battery bank to fuel RV refrigerators with the assistance of an inverter to give you 120 volts of power. Meaning, the refrigerator will run as if it were using electricity even though it is only using 12 volt batteries. Because of the size, smaller RV refrigerators with the freezer incorporated inside will easily run off of the 12 volt battery.
Four door RV refrigerators are nice to have mostly because only a limited amount of coolness is allowed to escape when opened. This is because you can select which door to open and there is no need to open up the entire unit just to get a drink.
It is critical to know the size and model of your RV refrigerator, especially when it comes to operating and troubleshooting. Plus, this information is important for knowing which power source works best with your unit.