If the battery is not turned on for a long time, the positive and negative terminals should be removed. How long can the battery be left after unplugging the negative terminal?

When removing the battery cable normally, you must first remove the negative electrode and then the positive electrode. Of course, you do not need to remove both the positive and negative wires. As long as one end of the circuit is disconnected, there is no way to form a loop to supply power to the equipment in the car; It should be noted that after the vehicle is turned off, the entire vehicle is not powered off. The anti-theft system and the remote key sensing system in the vehicle will relatively consume power.

Generally speaking, there is no problem if the negative electrode of the car battery is unplugged for one to two months. Long-term parking not only affects the car battery, but also has a certain impact on other parts of the car; for example, after the car has been parked for a long time Deformation of tires causes tires to be scrapped in advance, engine oil will undergo oxidative deterioration, and car paint will fall off.

Unplugging the negative pole of the battery in the car is equivalent to cutting off most of the standby power consumption in the car, allowing the battery to be in a state of natural discharge. When the discharge amount in the natural discharge state is very small, the car can park for a longer time when the negative pole of the battery is unplugged. Time, so partone-button startThe battery can be better protected if the vehicle or the old vehicle is left for a long time and the negative wire is unplugged.

The reason why the negative pole of the battery is removed first is that the negative terminal of the car is connected to the body, and the body is made of metal, and the entire body leads to the negative electrode; the simple understanding is that the body is the negative electrode, and the negative electrode of any electrical component only needs to be connected. The body can be grounded, and the current will be transmitted back to the negative pole through the body. It is no longer necessary for each component to pull another wire to the negative terminal, which saves the amount of wires and reduces the difficulty of circuit troubleshooting.