In the all-weather operation system of communication base stations, 12V valve-regulated sealed lead-acid batteries are indispensable backup energy storage devices. Base stations need to operate stably 24 hours a day throughout the year. Once the municipal power is cut off, it will directly cause signal interruption and network paralysis. The battery realizes millisecond-level power switching. It is in a floating charging energy storage state under normal municipal power and immediately takes over power supply during power failures. With low self-discharge and strong adaptability, it meets the 4-24 hour emergency power demand of base stations and supports the stable operation of communication networks.