The 1kW lithium iron phosphate (LiFePO4) battery is an optimal power supply for small and medium-sized household emergency energy storage, powering daily home appliances including lights, routers, mini refrigerators and TVs. Compared with traditional lead-acid batteries, it features over 3000 charge-discharge cycles and a service life of more than 10 years. With excellent thermal stability, it avoids fire risks for safer indoor use. Equipped with an intelligent BMS, it prevents overcharge, overdischarge and short circuit, and supports dual charging via mains and solar panels. Compact and easy to install, it switches power supply seamlessly during blackouts. It fits residential backup scenarios with low maintenance cost and zero exhaust emissions, meeting low-carbon household power needs.