solar street lamp is a street lamp which uses crystal silicon solar cell to supply power, maintenance-free valve-controlled sealed battery (colloidal battery) to store electric energy, bright LED lamps as light source, and controlled by intelligent charge-discharge controller, which is used to replace traditional public electric lighting. Solar street lamps can make full use of solar energy resources, which is of positive significance to ease the situation of conventional energy tension. The installation of solar street lamp is simple and convenient. The operation and maintenance cost of solar street lamp is low.