Will Cigarette Lighter Drain Battery. The cigarette lighter is the likely culprit. Any voltage present without a ground to.
If youre using a dash cam with your cigarette adapter on a car that shuts the power off to the cigarette port when the ignition is all the way off and the key is out then no a dash cam will not drain the battery of your car. Thus anyone who is dubious about car battery charger through the cigarette lighter or if the cigarette lighter is capable of charging the cars battery then the answer is Yes. Do the cigarette lighter outlets even have power when the car is turned off.
The power draw of just the charger would be so small that youd have to leave your car parked for weeks for it to make any difference.
The cigarette lighter is the likely culprit. I only use the socket for cellphone and GPS. A cigarette lighter can only drain the battery when it is pressed in to heat up it should spring back out once up to temperature and break the circuit. If your cars cigarette lighter socket stays live even when you shut off your car then yes it will draw power from the battery.
