Lack of electrolyte
If there is a lack of electrolyte, the battery will increase the battery resistance and heat during the charging and discharging process, affecting the battery life. In this regard, you can choose to add electrolyte stock, generally 1.25 ~ 1.28 dilute sulfuric acid, must be high purity, some impurities are very bad for the battery, such as iron and copper. After opening the lid, add 10ml per hole, not more, not more is better. This can only avoid the lack of electrolyte, so that the battery does not heat, and can not increase the capacity, can slightly extend the life of a few months. To really increase capacity, you have to replace it.
2, the charger and battery do not match
Heat in the charging process may be the battery itself, or it may be the charger's problem, the specific solutions are as follows:
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1, the battery itself: the aging of the battery, the internal resistance increases, the electrolyte dries up, and the internal short circuit causes heat. In addition, sulfuric acid crystallization is formed in the battery solution during the charging and discharging process, which precipitates and sticks on the lead plate, resulting in increased battery resistance and heating.
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Solution: These two kinds of problems can be solved by adding water, removing sulfur and depolarizing technical means. If the battery is due to sprint break caused by the battery heat, it is best to replace the new battery.