Strap BioLite's SolarPanel 5 Plus to your backpack before sunny hikes to charge your phone and camera at the campsite. This high-efficiency solar panel charges its battery at a stunning five watts per hour, and the battery holds up to eight watts. There's an indicator for how much battery you have left, and another that lets you know how well the solar panel is charging. The sundial and kickstand help you angle direct sunlight to the solar panel for the best possible charge. Its USB output accommodates any electronic with a USB cord, and a micro USB input lets you charge the battery at home before you leave.