“When I turn my car off the blue light stays on and can charge the phone. Will this drain the battery?”

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• Yes, this will drain car battery.

  Answered by Modal Customer Support 5 years ago

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• Yes, anytime you use a accessory in your car without the engine running it will drain the battery. It will probably take a little while while charging your phone, but it will eventually make the car battery go dead.

  Answered by scorpiosun 5 years ago

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