What is the normal discharge rate for a car?
2 Answers
Under normal circumstances, the discharge rate for a car is generally around 40mA. Of course, this can vary depending on the vehicle model, and some high-end cars may reach up to 80mA. Reasons for excessive discharge: However, if the car's discharge rate is 0.09A or even higher, it is definitely abnormal. This could be due to abnormal discharge in the alarm system circuit or other circuits. In such cases, it is necessary to trace the source and eliminate the issues one by one. Solutions for excessive discharge: The most straightforward method is to remove the corresponding fuse. For example, if removing the alarm system fuse returns the discharge rate to the normal range, it indicates that there is indeed a grounding discharge fault in that circuit, which needs to be addressed promptly.
I see the issue of car battery discharge. Normally, under static conditions, a car battery's discharge should be minimal, typically with only 1% to 3% monthly power loss or leakage current not exceeding 50mA. If the discharge is too rapid, such as difficulty starting after just a few days of parking, there might be a problem. I've personally checked with a multimeter—only when all electrical devices are turned off and the current reading is small can the battery be considered healthy. Common causes include improperly turned-off electrical devices, aging wiring, or modified equipment causing power leakage. Regular voltage checks can prevent such situations, ensuring a longer battery life. Remember, normal discharge ensures the vehicle is always ready to drive without affecting travel plans. If abnormal discharge persists, it's best to seek professional repair to avoid future troubles and prevent premature battery failure, which would require spending on a replacement.
