Why does the car battery suddenly run out of electricity, and what is the cause

The car battery is an indispensable part of the car. It provides electricity for the car's start and the electronic equipment in the car. If the car battery suddenly runs out of power, it will cause the car to fail to start. Why does the car battery suddenly run out of power? What caused it? Let's get to know it together.

The car battery has the characteristic of self-discharge. Even when there is no electrical equipment connected and no load, it will lose about 1% of the electricity every day. If the car is parked for a long time, it will easily lead to the loss of battery power, and the car battery will suddenly run out of power, causing the car to fail to start.

For ordinary lead-acid batteries, the car battery suddenly runs out of electricity, which may be caused by insufficient battery electrolyte, because the electrolyte of the car battery will naturally volatilize during use. If the electrolyte is insufficient, the car battery will be insufficiently stored. In addition, the service life of a car battery is generally 3-4 years. If the car battery suddenly runs out of power, the battery life may be reached. In this case, the only solution is to replace the battery.

If the car needs to be parked for a long time, it is best to disconnect the negative battery of the battery, which can prevent the battery from losing electricity and prolong the battery life. When the car is difficult to start, the battery failure warning light turns on or the headlight idling speed is dimmed, the battery should be checked to see if the voltage is normal. If the battery is insufficient, it should be charged in time. If there is a fault, it should be repaired or replaced directly.