What could be the reason why LED solar street lights don't work in the dark?

What could be the reason why LED solar street lights don't work in the dark?

LED solar street lights do not work at night, may be caused by a variety of reasons, as follows.

Solar panel failure: solar panel is the source of street lamps to obtain energy, if the surface of the ash, covered, or due to aging, damage and conversion efficiency is reduced, it will lead to insufficient charging, the lack of power at night can not light up the street lamps.

Battery problem: the battery is used to store electricity, after long-term use, there may be aging, overcharging and over-discharging, liquid leakage, etc., affecting the performance of power storage, so that the street lamps lack of sufficient power to run.

LED lamp damage: LED lamp itself has quality problems, or due to unstable voltage, poor heat dissipation, etc., resulting in LED lamp beads burned or circuit breakage, and then can not light.

Line failure: Long-term wind and sunshine, rain erosion, may cause line aging, short-circuit or disconnection, so that the power can not be transmitted normally, the street lamp can not work.

Environmental factors: Continuous rain, haze and other insufficient light weather will make the solar panel charging efficiency drops dramatically; low temperature environment, the battery performance will also be affected, resulting in insufficient power supply for street lights.