The household 51.2V LiFePO4 solar storage battery features excellent durability. It achieves over 6,000 charge-discharge cycles under 80% DOD working conditions with a service life of about 15 years, far longer than ordinary storage batteries. It efficiently stores excess photovoltaic power during the day and discharges electricity for household appliances at night or peak hours to maximize solar energy utilization. Long-term use greatly reduces reliance on municipal power and cuts electricity bills. Its stable performance avoids frequent replacement and lowers maintenance costs with outstanding cost performance.