... %Solar panel TypeMono-silicon solar panelFrameAluminum alloyLight source35 W LED lamp, Super bright φ 9 LED, 24 VLife span: 20000 H ... , batteryLife span: 5-8 yearsController24V / 10A, automatically time and light control, overcharge and disovercharge protection.Life span: 8-10 yearsLamp ... screw bolts, etc. Strenth reserch and design Super brightness and high luminous efficiency solar street light-LD008