Solar backpacks are a great thing to have whether you hit the trails every weekend or run around the city all week. The exterior solar panels generate electricity for charging your gadgets with clean energy, while the backpack totes all your stuff. There are plenty of these on the market, a few we've covered here, but if you already have a favorite backpack or messenger bag, why go DIY and make it into a solar backpack?
Instructables user Kajnjaps gave us permission to share this project with you. He says, "In this instructable I'll show you how to build a detachable solar panel and battery charger for your backpack. This can power or charge all your gadgets (cell phone, mp3 player...) while on the road. HAMs can use it to power small QRP transmitters and receivers on a field day etc."
Click through to see how to do it!