The Alpicool C15 portable mini fridge is perfect for trips to the park, family reunions, picnics, or longer events such as a camping trip. Freeze your food without the use of ice and get down to temperatures as low as -4°F(-20°C). You can use this portable mini fridge with your small solar system and it can be used indoors as well as in your car. If used in your car, it can also protect your car battery utilizing its temperature memory function so that your battery doesn’t run down. To give you an idea of how much storage it has, it can fit 20 pop cans and has a strong, durable plastic exterior and a thick high-density foam insulation.