Solar Controller to play a co-ordinating the control of an electronic discharge management controller in the entire solar street lights. Daytime sunlight charging. Perceive light. Evening check to street lights automatically turn on after the sun goes down. And detection of the light intensity of the lights turned on. Turn off the lights automatically detected in the morning sun. Main characteristics should be: automatic identification voltage system, complete charge and discharge management, various protection functions (reverse battery, the battery plate reverse, battery over-voltage, battery voltage, light control to turn on the lights, light control lights, timing discharge, etc.) various controller manufacturers design the controller also has its own characteristics. Discharge timing pattern set, and charging management. A good solar street light charge controller should be timed and accurate, the timing mode regulator convenient, intuitive. Reasonable charge management, to maximize the use of battery plates have the power to extend the maximum battery life