... rainy weather 2)100% natural energy 3)CE, ISO, patents 4)Safety Wind solar hybrid LED streetlight system can guarantee the ... life 20 years; Lead Acid Gel battery, span life for 4 years; Mono Solar panel, power efficiency 17%; LED streetlamp, 60 ... ,717.64installation expense4242.65970.63pole 10m41,051.504,206.00 installation expense4323.601,294.40 the expense of battery replacment and ...