“You say this has a rechargeable battery, does that mean it can run just off the internal battery and not the car battery ? Hence no wires to look at.”

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• It CAN run on the internal battery, but it only last 30 minutes. So basically, it needs to be plugged in at all times while in use.

  Answered by Will 4 years ago

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• The battery is for short-term use only.

  Answered by ProfJeff 4 years ago

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