Core technical advantages: First, long-life emergency power supply, adopting high energy density lithium iron phosphate battery, which can be configured with different capacities according to elevator power. The conventional configuration can ensure the normal operation of the elevator for 24 hours, and the large-capacity configuration has a maximum battery life of 72 hours. At the same time, it supports continuous power supply for emergency lighting, intercom, and monitoring systems; Second, seamless switching, automatically switch to the energy storage power supply mode within 0.1 seconds after the power grid fails, the elevator operation is uninterrupted and without impact, and will not cause elevator entrapment; Third, intelligent energy management, built-in BMS battery management system, real-time monitoring of battery status, automatic charging when the power grid is normal, and can realize off-peak power consumption in areas with peak-valley electricity price difference, reducing elevator operation electricity costs; Fourth, safety protection, with multiple protection functions of overcharge, over-discharge, short circuit, over temperature, and over current. The battery adopts a flame-retardant shell, equipped with a fire extinguishing device, which complies with GB 38031 power battery safety standard; Fifth, convenient installation, modular design, no need to modify the original elevator control system, adaptable to all brands and models of elevators, installation cycle is less than 1 day, can be used for new elevator matching and old elevator renovation.