The main functions of the energy storage battery system include the following aspects: Balance load: cope with the peak load of the power grid, making the power grid operation more stable and secure. Peak trimming: through the release of electric energy during the peak load, reduce the power demand, to achieve the purpose of reducing the power burden and maintaining the power balance. Emergency backup: in the case of power grid outage or other emergency situations, the energy storage battery system can provide backup power to maintain the normal operation of part of the load. Increase the output power of photovoltaic power stations: the application of energy storage battery systems in photovoltaic power stations can improve the output power of photovoltaic power stations by storing solar energy in the battery during the day and releasing it at night or in cloudy or rainy days. In summary, the energy storage battery system plays an important role in achieving energy transformation and improving energy utilization efficiency. Through years of research and development, Elemro provides a series of energy storage batteries. Elemro WHLV lithium iron phosphate battery has the advantages of high energy density, long cycle life, good safety performance and low self-discharge rate.