HandEnergy is an ingenious apple-sized device that charges your phone anytime, anywhere. But what really makes this thing special is the fact that it uses your own personal energy to do it.
In a time where power-banks and solar-power devices have become mainstream, a device that lets you charge gadgets on the go doesn't sound very special. But while power-banks have to be charged the old fashioned way, and solar panels need the sun to store energy, HandEnergy just needs a hand. To get this little guy to produce energy, which it then stores in built-in batteries, all you have to do is hold it in your hand and rotate your wrists.
To use HandEnergy, users start by winding a starter ring. This transmits a signal to activate the rotor, at which point they can start rotating their wrists to keep the rotor spinning. It might sound hard to believe, but the rotor inside HandEnergy spins at an average speed of 5,000 rotations per minute, transmitting mechanical power to create an electric current, and charging the built-in batteries. To charge a device, all you have to do is hook it up to HandEnergy using a USB cable.
HandEnergy was successfully crowdfunded on Kickstarter, raising over $71,000 in one month, and will be available for the masses in May 2017, at a price of 99 euros. One thing is for sure – it beats paying thousands of dollars on a solar-powered gadget-charging coat.