Solar street lamps use regional uniform continuation of wet weather is a few days, in order to design the outdoor solar street light for a few days rainy weather can still be used normally, which means in accounting configuration of solar street lamps, solar street light to think outside the rainy weather, to ensure that the wet weather can still normal use solar street lamps, such as wet weather in some areas is 5 days, that is about to guarantee 5 days can still normal solar street lamps lighting the rainy weather.