In daily maintenance, many car gel battery maintenance has been ignored, but this does not mean that the battery does not need to be replaced. Generally speaking, the battery life is 2-4 years. But in many cases, due to different usage habits, vehicle conditions, and road conditions, the service life of the battery is also different. Some batteries can be used for 4 years or more, and some can only be used for 1-2 years. Therefore, there is no fixed replacement cycle for the battery.

　　Autumn and winter are frequent periods when the battery is prone to failure. This is also the reason why the car battery cannot be started, the lights are dimmed, the battery discharge capacity is significantly deteriorated, and the car is likely to be unable to unlock or ignite. Therefore, we must pay more attention to checking whether the battery is faulty.

　　Self-discharge is a common phenomenon in car batteries. However, the battery is obviously not used much, but the power will automatically decrease or disappear. There are many reasons for self-discharge, such as the sinking of sulfuric acid in the lead-acid battery, or the impure electrolyte of the electrical board. The active material of the electrical board immersed in sulfuric acid may fall off by itself, and the self-discharge of batteries of different quality is different. In short, the direct consequence is that we cannot start the car after parking for a long time because the battery is dead.