Battery as a core component of UPS, which will direct influence the devices operation in computer rooms. So how to real time control and manage UPS battery, and real time understand its discharge time and attenuation ratio would be so much important. Battery Manager supports battery detection of its voltage, current, temperature; it can accurately report the attenuation ratio of battery capacity, predict discharge time, discharge surplus backup time, regular charge/discharge promote etc. Battery manager greatly help users to grasp the accordance battery status and data so that users can use efficient measures in time. It increase work reliability of battery, extend battery life and also make full use of the power supply capacity of battery.