A battery management system designed for aircraft, with a capacity of 22,000mAh, a voltage of 26.1V, and a discharge rate of 20C. It includes built-in functions for charge and discharge management. The intelligent battery board is equipped with precise sensors for monitoring voltage, current, and temperature, and utilizes advanced capacitance measurement technologies. This system can provide significant assistance for the flight control system's return-flight strategies and data analysis. Additionally, it features built-in battery equalization functions to extend the battery's lifespan, as well as protection mechanisms against overcharging, overcurrent, overvoltage, and short circuits, ensuring a safer environment for battery operation.