This system will store energy thatgenerated by solar panels to batteries at daytime. 

When night falls, thestreetlight will be turned on automatically by the controller,

whichsenses the diming daylight, and be supported by power from batteries.

The streetlight will work at full power before2 a.m., and work at half power afterwards. 

The light can work 12 hours per day andlast even in 3~4 raining days.