solar street lamp energy saving, environment friendly, easy installation, safe, long life-span, free of maintenance solar street lampspecification:LED light: 90W Bridgelux LED street light, 40pcs ... full power+2hrs in energy saving), 3overcast and rainy days.warranty time:solar panel: 10yearsLED light: 3yearsBattery: 3yearscontroller & LED driver: 2years 90w solar street lamp