This product primarily consists of high-quality lithium iron phosphate batteries and a smart energy storage inverter. When sunlight is sufficient during the day, excess power generated by the rooftop photovoltaic system is stored in the energy storage system. The energy stored is then released at night to supply household loads, achieving self-sufficiency in household energy management and significantly enhancing the economic performance of the new energy system. Additionally, in the event of a sudden power outage or grid failure, the energy storage system can promptly take over the entire household's electricity needs. The capacity of a single battery is 5.32 kWh, and the maximum total capacity of the battery stack is 26.6 kWh, providing a stable power supply for the family.