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Why Lead-acid Battery Capacity Will Be Reduced
- Jun 17, 2018 -

First, I can see from the structure of lead-acid batteries. The positive plate of lead-acid battery is the main factor affecting the working life of the battery. The capacity of lead-acid battery charging and discharging cycle, especially the deep downward capacity drop is closely related to the quality deviation of positive plate. The corrosion rate of the grid depends on the composition of the grid alloy, but the higher the storage temperature is, the faster the corrosion rate is, and the deeper the discharge depth is, the more serious the corrosion is.

From the chemical reaction of the lead-acid battery. In the normal operation of the battery, the PbSO4 particles on the negative plate are small, and the discharge is easily restored to plush lead, but in some cases the battery has produced a difficult to reduce lead sulfate, known as sulfation. There are many reasons for the negative salinization, such as the discharge can not be charged in time after discharge, the battery is put on hold for a long time, cause serious self discharge, the electrolyte concentration is too high, the long-term charge is insufficient, the long term discharge at high temperature, this kind of lead sulfate is difficult to reduce by conventional method, so the reduction of active substance will affect the capacity of lead-acid battery. Quantity. Therefore, we have repeatedly stressed that there must be a serious maintenance system for battery storage to ensure the quality of batteries.

In the end, from production to sale to use, there may be a long period of time when the battery is not installed and used in time, resulting in long-term storage. The temperature has a great influence on the self discharge of the battery, and the long-term storage will result in the insufficient capacity of self discharge.