After disasters such as earthquakes, floods and typhoons, public power grids often collapse, making emergency rescue communication the core guarantee for rescue operations. Portable communication terminals, emergency command radios and temporary base station devices are generally equipped with lead-acid batteries energy storage systems. The batteries have stable charge-discharge performance, good cycle life and strong vibration resistance, adapting to rescue transportation and field operations. They start power supply quickly after blackouts to ensure smooth on-site command communication, video transmission and personnel positioning signals, saving precious time for rescue. Safe, reliable and highly compatible, they are standard energy storage equipment for emergency communication guarantee systems.