Technical Data-System:80W Solar LED Street Lighting with 10M Height 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) 10M Pole Height 80W LED lamp 11-12Hrs 2--3 Nights Lighting Solar Panel: Lifespan:20-25 years 175*2PCsW for 24V Lighting, 17% Efficiency, Poly Crystalline Silicon. Gelled Battery Lifespan:5-8 years, 160Ah/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, 80W LED, White Color,130LM/W,>34Lux,6500K, IP68,120 Degree Angle, High Power, High Brightness. Lamp Housing: Lifespan: More than 20 years Die-casted Aluminum, IP65 High transmittance &density toughened glass, Pole: Lifespan: More than 20 years 10M Height, Steel, Hot-Dip Galvanized. With Arm, Bracket, Flange, Fittings, Cable, Etc Plastic Coated, Rust Proof.Resistant to Wind: ≥150KM/H. 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 or 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.