Label: There are three main factors that affect the insufficient capacity of UPS batteries: First, UPS batteries may exist for a relatively long time from production to sales to use. The batteries cannot be installed and used in time, resulting in long-term storage, and the temperature is high and low. The self-discharge has a great influence, and long-term storage is bound to cause self-discharge and cause insufficient capacity. Second, the positive electrode plate of the battery corrodes and deformation causes insufficient capacity. The positive plate of the UPS battery
is the main factor affecting the working life of the battery. The capacity of the lead-acid battery
charge-discharge cycle, especially the capacity drop under deep cycle is closely related to the quality deviation of the positive plate. The corrosion rate of the grid depends on the composition of the grid alloy, but the higher the storage temperature, the faster the corrosion rate, and the deeper the depth of discharge, the more severe the corrosion. Third, the negative plate sulphated UPS battery is in normal operation, the PbSO4 particles on the negative plate are small, and the discharge can easily be restored to fluffy lead, but sometimes lead sulfate, which is difficult to reduce, is generated inside the battery, called sulfate化. There are many reasons for the salting of the negative electrode, such as the inability to charge in time after discharge, long-term storage of the battery, causing serious self-discharge, excessive electrolyte concentration, insufficient long-term charging, and long-term discharge at high temperature. This lead sulfate is difficult to reduce by conventional methods. In this way, the reduction of active materials will inevitably affect the capacity of lead-acid batteries. Therefore, we have repeatedly emphasized that battery storage must have a serious maintenance system to ensure battery quality.
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