Why does the battery leak?

The leakage of the battery is caused by the chemical reaction of the internal materials. The following is the knowledge about the leakage of automobile batteries: 1. Does the battery leak and need to be replaced? If the electrolyte leaks seriously (completely in a short time), it should be replaced with a new one in time. 2. Treatment method of battery leakage: first, make a visual inspection to find out the location of acid leakage, remove the cover plate to see if there are traces of acid leakage around the safety valve, and then open the safety valve to check whether there is flowing electrolyte in the battery. If no abnormality is found, the air tightness should be checked. Finally, observe whether there is flowing electrolyte when charging, and if there is, draw it out.