Abstract: High-power phased array antennas are widely used in modern communication and detection fields, and their stable power supply is of vital importance. This paper focuses on the application of battery packs in the power supply of phased array antennas, analyzes the power consumption characteristics of phased array antennas, and discusses the selection criteria and configuration methods of battery packs. Through experiments, it is verified that a reasonably configured battery pack can effectively meet the power supply requirements of phased array antennas, improve the reliability and stability of the system, and has significant advantages in ensuring the continuous and stable operation of phased array antennas.