The battery management system (BMS) of outdoor power supplies plays a key role in a variety of scenarios to ensure the safety, stability and efficient operation of the battery. Whether it is camping, emergency rescue, field exploration, or communication base stations, outdoor monitoring equipment, or solar energy storage systems, BMS can monitor the battery status in real time and provide multiple protections such as overcharge, over-discharge, short circuit, and temperature management. At the same time, it can also optimize battery performance, extend service life, ensure stable operation of equipment in extreme weather and complex environments, and provide reliable protection for outdoor power supply.