Portable Design, Iceless Cooler The Koolatron P85 Krusader Cooler is our largest 12 volt cooler available and is ideal for packing meals for the campsite and plenty of drinks to share with your friends. It boasts a 52 quart capacity (49L), which can fit up to 80 cans! The Koolatron P85 Krusader Cooler uses thermoelectric cooling, which means you don't need any ice. Koolatron coolers use thermoelectric technology to cool contents to 40F below the surrounding temperature. You can also use your Koolatron Cooler to warm food up to 140 degrees F (60 Celcius). The warming mode is for transporting food to a potluck dinner or for warming infant food and bottles while on the road. This electric cooler is powered through any 12 car plug. Just plug your electric travel cooler into the 12 volt outlet in your car, SUV, truck, boat or RV to keep your favorite foods and drinks cold. Or with the AC adapter (sold separately) you can use your cooler indoors, when you need to cool drinks or food.