Welcome to the summer of solar! Why not soak up some free power from the sun? Charge your gadgets on the go by making your own solar battery charger, then affix it to your favorite handbag or backpack. This is a fun soldering project you can build in an afternoon!
When you’re out in the sun (or as long as your bag is), the battery charges up. You can simultaneously charge your phone when the sun is bright, and the battery will keep supplying juice long after the sun goes down.
Before you begin, read through the following guides: