The 5.5kW off-grid solar system with LiFePO4 battery is a complete standalone energy solution designed for locations without reliable grid access. By integrating a high-efficiency off-grid inverter with a long-life LiFePO4 battery energy storage system, it ensures continuous and stable electricity supply for residential and small off-grid applications. The system efficiently stores solar energy during daytime and delivers power on demand, supporting essential household loads during nighttime or power shortages. It is an ideal solution for remote homes, cabins, farms, and backup power scenarios requiring energy independence and long-term reliability.