... rise of our low-power LED is within 20 oC,E, Life span ≥50,000hoursBattery, high Efficiency, Maintenance-free Lead-Acid ... leakage & water seepage when the battery is buried underground.B, Life span ≥5year , Gel battery: ≥8 yearsController, intelligent digital ... and Silver-plated high-strength anti-aging waterproof connectorsB, Life span: ≥10yearsProduction field Solar street lamp project case Solar ...