The SZRSTH Camping Solar Panel with Waterproof Backpacking Charger is now just 36 (regularly $92) at Walmart. It's rated 4.5 out of 5 stars. The foldable, portable lightweight emergency panel is ...

The solar panel features a waterproof design, which is great if you're taking it camping and it rains. And its monocrystal silicon panels help it achieve higher efficiency and longevity.