This portable fridge includes and runs on a rechargeable lithium battery that can last for at least 12 hours. It can be charged with solar power, but also through DC power from a car, truck, RV, or home socket. The portable refrigerator could also be used on a boat, tiny home, or at any off-the-grid house. While normal refrigerators run on 120 volts, ours runs on 12, 24, and 120 volts. It is 3.4 cu ft (95L) and cools down to -0.4 degrees Fahrenheit.