In overcast or winter weather, you can easily charge solar lights with indirect sunlight. However, even if you don't have access to direct sunlight, you can still charge your solar lights in other ways. In fact, you can even boost up the charge with no sunlight at all! So if you want to ensure you get the most out of your outdoor lighting this season, here's how to charge solar lights without the sun. They harness solar power to function, but what happens when sunlight is scarce? You can charge solar lights without direct sunlight by using alternative light sources such as incandescent bulbs, LED lights, or even. . If your solar lights aren't getting direct sun—due to cloudy days or indoor use—you're not out of options. Perfect for U. homeowners and DIY enthusiasts, this blog offers. . But to ensure your outdoor solar lights remain bright and functional, proper charging is essential. Solar lights are versatile and can be charged using different light. .