In the past, I have always been skeptical about solar-powered lights. They were either not very bright or would not last very long. I wanted to add some lighting to my firepit but did not want to run power to them. I decided to test some to see how well they would work. I found the LITOM Solar Landscape Spotlights on Amazon. They are waterproof, look nice, and have good reviews.
So far my 6 solar-powered lights have worked for over 6 months with no issue. They are bright enough for lighting the firepit and stay on for hours even though they do not get a lot of sun where they are located.