Working Principle Video of 4kW 8kWh PV-Storage All-in-One System

This 4kW 8kWh PV-storage all-in-one unit is paired with 6×585W PV modules. In daytime, solar energy is converted into electricity to power household loads like TV, fridge and lights first, while surplus power charges the built-in battery. When sunlight fades or grid fails, the battery outputs AC power continuously. It can run 200W loads for 40h and 500W loads for 16h, enabling self-consumption and home backup power supply.