There are many uses for a battery operated portable fridge. There are fun uses like a camping trip, day at the beach, or tailgate party. A battery operated portable fridge can also be used for practical purposes like keeping medications, such as insulin, cold while traveling. Most models are able to be powered from either a standard household 110 Volt outlet (such as found in an RV or camper) or a 12 Volt source like a car battery. Some models offer the option to be used as either a fridge or freezer. When shopping for the best of the best battery operated portable fridge, be sure the model you are considering is an actual refrigerator capable of maintaining safe food temperatures over time rather than a battery powered cooler.