The ER series outdoor pole-mounted communication power system has a cost-effective, customizable rack-mounted supporting installation form. The system is composed of a rectifier part, a dynamic ring part, an ODF (optical fiber fusion splicing), a lithium battery part, and a power distribution part. At the same time the whole system can maintain high reliability and provide flexibility for future expansion. Based on the monitoring management function and power system monitoring function, equipped with appropriate sensors, the system can achieve environment monitoring，provide lithium battery status information and system status information, and provide RS232, RS485, LAN communication interface. It can support MODBUS RTU， MODBUS ASCII, SNMP V1,V2,V3 protocols, facilitating remote monitoring and unattended.