... lightTechnical parameters of solar street light Height: 6~11M,Q235,galvanized cone-shaped mast with coating finish on the surface ... battery: valve-controlled sealed service-free colloid, silicon and lead-acid cells with service life ≥5 yearsBattery box: molded, fully sealed ... silicon, 20 years life, 10 years warranty.2. LED light source: imported American Bridgelux/Cree high-power LEDs, luminous flux ...