Got off the plane at midnight last night to find my vehicle dead. I plugged my fully charged Mighty Jump into the cigarette lighter and waited 15 minutes. I am very disappointed to write that this gadget is simply a failure. The claim on the shopping channel insisted that this product would be good for anyone (like me, a woman in a dark parking lot at the airport with a dead battery). I will keep it for charging my cell phone but if you think this will work on a car battery - forget it! I finally got a real jump the traditional way.
Bottom Line: No, I would not recommend this to a friend
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