... remove the unit from my car when I turn off my car engine,will it affect my battery ... car when your car is regularly in use.Some car has an automatic cut-off electrical supply to the cigar-lighter socket when engine ... is off to make it safer.As a better advice, if you intend to park your car ... cars,SUV,pick-up,trucks,compact car,luxury car,sport car etc.Surface Material:ABSRated Voltage:DC12VRated ...