The working principle of solar LED street light: The solar street light is controlled by intelligent controller. The solar panel is irradiated by sunlight, absorbs the sun light and converts it into electric energy to charge the battery. At night, the battery pack provides power to supply the LED lighting to realize the illumination. The DC controller can ensure that the battery pack is not damaged due to overcharging or overdischarging, meanwhile, it has temperature compensation and lightning protection, reverse polarity protection and other functions such as Light control plus time control, lighting in different time (can be preprogrammed different power in each time period) Intelligent lighting 3-5 rainy days. Ideal for park, Roadway, Parking lot, Courtyard and many other applications.