Container Energy Storage System (CESS) is an integrated energy storage system developed to meet the needs of the mobile energy storage market. It integrates battery cabinets, Battery Management Systems (BMS), container dynamic environmental monitoring systems, and can also integrate energy storage inverters and energy management systems according to customer requirements. Container energy storage systems have the characteristics of simplifying infrastructure construction costs, short construction cycles, high modularity, and ease of transportation and installation. They can be applied to power plants such as thermal, wind, and solar power stations, or to islands, communities, schools, research institutions, factories, large load centers, and other applications.