This must-have koolatron 12v multi-purpose ac/dc adapter lets you use your koolatron cooler or any 12v appliance inside, outside, or on-the-road. This lightweight adapter allows users to power up their 12v cooler through a 110/120v electrical outlet. The koolatron power adapter comes equipped with an automatic reset circuit breaker to protect against circuit overload or over charge. This adapter turns your 12v cooler into an indoor mini-fridge.