Technical Data-System:60W Solar LED Street Lighting with 8M Height Pole System based on Africa's average solar radiation condition 5.0KWH,Lighting hours: 11-12 Hrs/Day*3-4 days (It will be designed by your local condition) Detailed Specification for 10M Height 60W solar power street light Pole Height 60W LED lamp 11-12Hrs 2--3 Nights Lighting Solar Panel: Lifespan:20-25 years 120W*2PCs for 24V Lighting, 17% Efficiency, Poly Crystalline Silicon. High Efficiency. Gelled Battery Lifespan:5-8 years, 120Ah/12V*2PCs, Sealed Type, Gelled. Deep cycle. Maintenance Free Intelligent Solar Controller, Lifespan:5-10 years 15A/24V, Automatic Light and Time Control Over-charging/discharging Protection. Light source: High Power LED Lifespan: >100000Hrs, 60W LED, White Color,120LM/W,>32Lx,6500K, IP68,120 Degree Angle. Lamp Housing: Lifespan: More than 20 years Die-casted Aluminum, IP68 High transmittance & density toughened glass, Pole: Lifespan: More than 20 years 10M Height, Steel, Hot-Dip Galvanized. With Arm, Bracket, Flange, Fittings, Cable, Etc. LED Solar street light Working Principle: 1. LED solar street light relies on solar energy, which is clean, endless and environment-friendly. 2. The system is mainly composed of solar panel, light source, controller and battery. 3. In daytime, when there is sunshine, the solar panel can convert the solar energy to electric energy and store it in the battery. At night rainy or cloudy condition, the battery shall supply power for normal lighting. 4. The controller can judge the brightness of daylight and automatically switch on the light. The whole process is operating in completely automatic mode, without human action.