OBD Scanners: Do They Drain Your Battery When Plugged In? Power Consumption Risks Explained
Yes, an OBDII device can drain your car’s battery if plugged in for too long. It draws a small amount of power, measured in milliamps (mAmp), even when the ignition is off. This constant power draw can weaken a parked car’s battery over time. Unplug the OBDII device when not in use to avoid battery … Read more