UPS power supply is an important device to ensure the normal operation of key equipment during power outages. Our load bank can simulate various abnormal conditions such as city power outages and voltage fluctuations, conduct a comprehensive test of UPS power supply, and evaluate its key performance indicators such as battery capacity, switching time, and output waveform. At the same time, in daily maintenance, through regular testing, potential problems of UPS power supply can be discovered in time, its service life can be extended, and the UPS power supply can be ensured to work reliably at critical moments.