The AMPY or the new nPower PEG allow users to charge mobile devices without an outlet, without sunlight or wind—without anything but a little bit of motion.
Users can throw it in a bag while they’re walking, strap it to a bike, or take it jogging, and then plug in their phone to recharge it.
Movement causes a spring-mounted magnet to bounce and pass repeatedly through a coil, charging the battery. It’s especially useful for people who need to power their mobile devices while they’re off the grid.
Yesterday I noted a portable battery charger that needs only 5 minutes to get enough juice for a full iPhone 5 charge and today I found one that’s a polar opposite: It takes almost all day just to top off this battery, which only provides another 3 hours of run-time for a phone. There’s one more big difference, though. This device, dubbed the Ampy, doesn’t need to be plugged into a wall charger at all. Instead, it uses your own kinetic energy.
You carry or wear the small battery pack throughout the day. Take around 10,000 steps and you’ll fill up the battery inside the Ampy, which can then be used to recharge a phone over USB. If you run or cycle, just a 30 to 60 minute workout will do the same. Phones aren’t the only devices that can benefit from Ampy. The battery can recharge a smartwatch to run…
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