• Avoid unexpected dead car batteries: Koolatron's 12V Battery Saver prevents 12 volt accessories from draining the battery when your vehicle is turned off.
• Works automatically to save power: The battery saver senses when the current drops below 11 volts and stops the power to the connected 12V accessory.
• Reconnects when the vehicle starts: When you restart your car, truck, or SUV, the battery saver automatically reconnects and restores power to the 12 volt accessory.
• Compatible with any standard 12 volt outlet: The Koolatron 12 volt battery saver works in any vehicle with a standard 12V outlet.
• Ensures peace of mind: When you plug a 12V cooler, fan, or other accessory into your vehicle with the Koolatron 12V battery saver, you can enjoy the peace of mind of knowing that you will always be able to start your car, truck, or SUV.