SERVER CABINET POWER BACKUP SYSTEM AND TESTING METHOD THEREOF

Embodiments of the present disclosure provide a server cabinet power backup system and a testing method thereof, and relate to the field of power backup technology. A specific implementation includes: in a self-test process of the power backup unit, the battery management module is configured to: control the battery pack to supply power to the self-test resistor to discharge the battery pack, control the battery pack to be charged after the battery pack is discharged, and collect a charge and discharge parameter of the battery pack, and the battery management module is further configured to: determine attenuation performance of the power backup unit according to the charge and discharge parameter of the battery pack. Thus, the self-test on the battery pack in the power backup unit in the server cabinet power backup system is implemented, which reduces manual operations, and improves a test efficiency of the power backup system.