There’s nothing more
frustrating than a beeping low battery—except maybe your busy schedule, which prevents you from finding a wall socket to bring it back to life. But to save yourself the headache next time your computer, tablet, or phone is running on empty, why not invest in a charging gadget that can re-up your energy and keep you in the game
? Here, we round up nine of the best. Most of these solar-powered and
portable rigs will fit in your pocket, computer case, or carry-on, so you’ll be powered up 24/7.
How Technology is Changing Fitness >>>