The distributed energy storage composed of backup battery energy storage in communications base stations can participate in auxiliary market services and power demand-side response, which will exert the superiority of distributed storage resources in power. The distributed energy storage composed of backup battery energy storage in communications base stations can participate in auxiliary market services and power demand-side response, which will exert the superiority of distributed storage resources in power. As mobile communication networks continue to expand, energy storage systems for telecom base stations have become a critical foundation for network reliability and operational resilience. Beyond emergency backup, modern storage systems now deliver measurable economic, environmental, and grid-level. Telecommunication networks depend on one critical factor — uptime. Whether it's a rural tower or a dense urban 5G station, power interruptions can lead to dropped calls, disrupted data services, and costly equipment resets. However, these storage resources often remain idle, leading to inefficiency. paper, the mathematical model of lithium battery studied, the topology and operating mode of the bi-directional converter for energy storage are analyzed, control.