RG-LD series is a kind of solar street light , which uses sunlight as its energy source. During the day, the solar panel receives solar radiation energy and converts it into electric energy output. It is stored in the battery through the charge and discharge controller. At night, the solar panel stops charging and the controller signals the load to discharge, and the lamp starts to turn on. Solar street light is easy to install, convenient to use, no extra wiring, maintenance-free, daylight out, dark light, convenient and heart-saving.