Solar lights can be charged without direct sunlight, but it will take much longer and may not charge the light completely. Solar lights work best when placed in an area where they will receive direct sunlight for at least six hours a day.
The best way to charge solar lights is with sunlight. However, even if you don’t have access to direct sunlight, you can still charge your solar lights in other ways. In overcast or winter weather, you can easily charge solar lights with indirect sunlight. What’s more, you can even charge your solar lights with no sunlight at all!
While it is commonly assumed that direct sunlight is necessary for solar lights to function effectively, this is not entirely the case. The efficiency of solar lights does indeed improve with direct sunlight, as it provides the maximum amount of solar energy, but solar panels can still charge with indirect light, though at a lower efficiency.
For best results, charge your solar lights for 8-10 hours in full sunlight. Be sure to place your solar lights so that they’re not blocked from receiving sunlight, as they would be, for example, under a tall tree.
Shadows and shaded areas also influence charging ability, as they limit direct exposure to sunlight. Conversely, clear daylight conditions enhance performance by providing ample direct sunlight for optimal charging. The location and positioning of solar lights are crucial for maximum exposure to sunlight.
A solar light can charge somewhat in the shade, but it is difficult to keep it fully charged if it is always in the shade. If the solar light turns off suddenly, it means the battery is completely out of power.