Outstanding Performance of Alpicool Portable Car Fridge Suitable for car using work on 12/24V DC. Run great with your solar system as well. Can freeze down to -4°F(-20°C) for true car refrigeration. 3 stage car battery protection system to prevent the car battery run down. Vibration resistant design to protect the device safety while driving on road. Quiet Operation: Less than 40db, like living in quiet suburb. PRODUCT PARAMETER Power Input(V): DC 12/24V Currency(A): DC 4.5/2.2A Temperature Range: -20℃-20℃(-4℉-68℉) Average Power Consumption: 60W