recently, gree altairnano energy storage systems for communication stations have been launched in a number of high-altitude areas in sichuan, such as liangshan prefecture, ganzi prefecture and aba prefecture. as a backup power that features safety, reliability, low-temperature resistance and super long life, gree energy storage system will provide emergency power in the case of insufficient power supply or accidental power failure. they are a strong guarantee for communication base stations in high-altitude and low-temperature area in ensuring safe operation and smooth communication.