... high Efficiency, Maintenance-free Lead-Acid Battery or Gel battery, A, Our battery casing is designed specially for solar applications, advanced ... Life span ≥5year , Gel battery: ≥8 yearsController, intelligent digital controller-A. Self development LED intelligent module(power consumption 0.06W to ... ≥10yearsProduction field Solar street lamp project case Solar street light Wiring diagram DC12V system