This product is an advanced product developed to meet the requirements of the new backup power supply of the current communication operators under the new trend of communication, with the characteristics of integration, miniaturisation, lightness, intelligentization, standardization and environmental protection, it can be widely used in outdoor tower lamp-post station, indoor distributed weak electric well, micro-station and other environmental bad scenes, backup power supply for communication equipment such as RRU and AAU at the end of communication network.