Which line is broken when the car does not have a battery for a long time?Car battery negative disconnection hazard

If the car is not used for a long time, if you want to disconnect the positive and negative poles of the battery, it is better to disconnect the negative wire than the positive wire. As long as the negative wire is disconnected, a loop cannot be formed to provide power to the electrical products in the car, and most of the electrical products in the car cannot be powered on. The power supply in the battery will be in a state of natural discharge, and unplugging the battery's negative wire can make the natural discharge very small, which can make the battery lose power for a longer time.

Disconnect the negative pole of the car battery:

1. After disconnecting the negative pole of the car battery, the entire vehicle will be in a state of no electricity, and the car cannot be started after starting;

2. The car anti-theft system and other functions are maintained by the battery power supply, naturally there is no way to use these functions when the negative pole is disconnected;

3. Disconnecting the negative electrode of the battery for a long time will cause the data that the owner to adjust independently to go out and disappear;

4. If the negative pole is disconnected for a long time, then the engine fault light on the dashboard may be on, and various problems will occur in the vehicle.

Battery maintenance methods include:

1. The car should not be parked for a long time, the battery will discharge by itself if it is not used for a long time, until it is scrapped. Therefore, it is necessary to start the vehicle every once in a while to keep the battery in a good condition;

2. The connecting lines, accessories and terminals must be regularly inspected and cleaned up, and in order to protect the wiring harness, special grease is used to coat the terminals;

3. Continuously starting the car will definitely damage the battery due to excessive discharge. Every time it is started, the battery will provide a strong current to the starter. When starting the vehicle, control the ignition time and frequency.