... C, Life span, no rusting within 30 years.Solar panel: A, Solar panel, amorphous silicone,mono-crystalline silicone,poly-crystaline ... duration without sunshine 5 times longer than regular solar garden light, solar garden light can work 25 rainy days , ... anti-aging waterproof connectorsB, Life span: ≥10yearsProduction field Solar street lamp project case Solar street light Wiring diagram DC12V system