The battery energy storage system is an energy storage device that converts electrical energy into chemical energy or other forms, which can be used for various applications, such as power supply, backup power, electric vehicles, etc.

The battery energy storage system is usually composed of multiple battery packs, and each battery pack can store certain electrical energy. These battery packs can be installed on the ground, roof, helicopter and other places.

One of the main advantages of the battery energy storage system is high reliability. Because the battery pack can run for a long time and is adaptive, it can work under any weather conditions. In addition, the battery energy storage system also has the characteristics of low cost, high energy density, and good scalability.

However, the battery energy storage system also has some challenges and restrictions, such as battery life, charging and discharge rate, safety, etc. Therefore, when designing and using a battery energy storage system, you need to fully consider these problems and take corresponding measures to solve it.