The prefabricated battery storage compartment includes: battery compartment body, electrical compartment, battery rack fire escape. Fire protection and monitoring systems are installed in the battery compartment and electrical compartment. Multiple sets of heat dissipation systems are installed on the top of the battery compartment. The electrical compartment is equipped with a prefabricated reverse battery energy storage compartment, including the battery compartment body, electrical compartment, battery rack, and transformer. By managing the battery pack through the battery management system, it can serve as a fire escape route. The battery compartment and electrical compartment are equipped with fire protection and monitoring systems, and the battery backup power supply is used to achieve the function of an energy storage power station. Multiple sets of heat dissipation systems are installed on the top of the battery energy storage prefabricated cabin, and the electrical cabin is equipped with an inverter. Through strong electrical properties, simple system, small size, high mobility, strong adaptability to the environment, and the operation of a safe pool management system for battery pack management, it can be used as a reliable backup power source.