Why do UPS uninterruptible power supply batteries need to be discharged regularly?

This type of periodic discharge is mostly carried out on UPS batteries that are used less frequently and have long-term high-power consumption, with the aim of eliminating phenomena such as capacity reduction and current failure caused by polarization. Regular discharge can maintain the chemical activity of the active materials on the electrode plates of the battery. Charging and discharging are used to keep the capacity of the battery from decreasing and to detect aging batteries. Timely maintenance and treatment can be carried out to ensure the normal operation of the battery.