What are the hazards of frequently disconnecting the negative terminal of a car battery?
1 Answers
The negative terminal of a car battery is connected to the vehicle's body, which is made of metal, so the entire vehicle is connected to the negative terminal. This means that the moment the battery's negative terminal is disconnected, the car's electrical circuit can no longer form a complete loop, and the battery will stop supplying power. Some functions of the car may fail or reset to factory settings. For cars controlled by an electronic control unit (ECU), the onboard computer will shut down, potentially leading to data loss or the appearance of fault codes. If the battery is depleted, the car may be difficult or impossible to start. In such cases, a battery charger can be used to recharge the battery, or a jump-start method can be employed. The following precautions should be noted: 1. If a battery is left unused for a long time, it will gradually self-discharge until it becomes unusable. Therefore, the car should be started periodically to recharge the battery. 2. When removing the two electrodes from the battery, it is important to first disconnect the negative terminal or remove the connection between the negative terminal and the car's chassis before disconnecting the positive terminal (marked with a '+'). Car batteries have a limited lifespan and should be replaced after a certain period.
