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Price: $ 29.99
Just plug it in to your vehicle′s cigarette lighter adaptor and plug your 12-Volt Cooler into the other end. Your Koolatron Cooler Will Not Drain Your Battery no matter how long you leave your Truck setting with it plugged into the 12-Volt Battery Saver.
When your battery Voltage drops to 11 Volts, the Battery Saver shuts off the current to all accessories plugged into it, preventing further drainage. It reconnects automatically when you start your vehicle.
Made in North America. Backed by a Full 1Year WARRANTY