The second generation of 5kW standby power supply system is based on the technical iteration of the first generation of products, which further reduces the space occupation ratio of the system. According to the characteristics and working conditions of each component, through the best arrangement and further optimization of the system control strategy, the efficiency of the second-generation standby power supply system reaches more than 46%, which is at the leading level in the industry; At the same time, the new generation of the system also has new functions such as remote control, fast cold start, and information cloud synchronization; Suitable for a variety of fixed application scenarios such as data centers, communication base stations, backup power supplies and so on.