Nothing solar about it. I tried leaving it in direct sunlight for hours a few times, and it never charged. If you plug it in, it charges fine and will provide decent power to charge phones. Tried contacting the company and got no reply. Another fun part, the included clip barely fits in the hole. Don’t buy.
I’m sorry for the poor experience. Please contact Woot Customer Service. From a browser, use the Woot Customer Service form. In the Woot App, choose Account from the bottom navigation and then Support.