The solar off-grid system is an independent power generation system that does not rely on the power grid. It mainly consists of solar panels, batteries, solar controllers, inverters and other components. The solar off-grid system is widely used in areas with unstable power supply or insufficient grid coverage, and is suitable for various scenarios: Residential use: Especially in remote areas without electricity, such as plateaus, islands, pastoral areas, border posts, and other places; Transportation: Such as the power supply for navigation lights, traffic/railway signal lights, traffic warning/sign lights, etc.; Communications: Such as solar unmanned microwave relay stations, optical cable maintenance stations, broadcasting/communication/paging power systems, etc.