This happens to outdoor solar lights that are somewhere where debris like tree leaves and other objects fall. Solar panels that are totally covered with dirt not only prevent direct sunlight and charging but also confuse the light sensor, which cannot tell whether it is daytime or nighttime.
While you don’t have to place solar lamps into the direct sun to function, they need a reasonable amount of light to be fully charged. Outdoor solar lights usually charge their batteries within six hours of direct sunlight every day, depending on the sun intensity, type of solar panel, and battery.
Solar lights do not only require adequate sunlight to turn on but also for them to turn off on their own. Thus, the reason your solar lights might come on during the day is that shadows cut out your sunlight. 2. A dirty solar panel has blocked the light sensor
A layer of dust or dirt on a solar panel prevents it from absorbing sunlight, and the little that gets in may not charge the batteries properly. The dust could even get so thick that no sunlight reaches the panels, and as a result, the batteries will not charge at all.
Regularly inspecting the solar lights for proper charging, battery condition, sensor functionality, cleanliness, and optimal positioning is crucial for troubleshooting nighttime issues effectively. Ensure the solar lights receive direct sunlight exposure during the day for adequate charging.
Outdoor solar lights usually charge their batteries within six hours of direct sunlight every day, depending on the sun intensity, type of solar panel, and battery. However, if your house or trees envelop the solar panels in the dark, especially during afternoon hours, they won’t get quite enough sunlight, and they might not turn on all night long.