... to drive the LED lighting, Protective Rank IP67, It can make our solar street light save another 80% power ... light can save >80% power than the regular ones. Therefore, our solar street light can work 5 times longer ... :The life span of our solar street lights is much longer than many regular vendors, e.g. our ... V.S. 1-2 years (<3 years) from regular ones, saves the spare parts cost and maintenance cost ...