When the gel battery is discharged, the active material of the positive and negative electrodes becomes lead sulfate (PbSO4), and then returns to the original state after charging, that is, the positive electrode becomes lead dioxide (PbO2) and the negative electrode becomes sponge lead (Pb). Therefore, in daily maintenance, it is basically "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.

　　Under what circumstances should the battery be replaced? How much do you know about this problem? To provide you with some information on this issue, I hope it will be helpful to you, and you can avoid detours when using and buying in the future.

　　1. The original performance cannot be restored after charging due to power failure.

　　2. The battery shell is cracked, bulging or even leaking.

　　The former means that the battery performance is degraded, and the latter means that the battery is damaged. In both cases, the battery cannot be used normally and needs to be replaced immediately.