Does OBD Drain Battery When Left Plugged In? Risks of OBD-II Power Consumption
An OBDII device can drain your car battery if it remains connected. It continuously draws power from the live 12V pin. This current draw is small but can add up over time, particularly if your battery is weak. To prevent battery drain, always disconnect the OBDII device when not in use. Some OBD-II devices enter … Read more