A lot of mobile devices don’t offer the option of swapping in a fresh battery for uninterrupted uptime. Although external USB power banks are useful, they’re also limited by capacity. A new hybrid generator, currently funding on Kickstarter, is looking to offer on-demand power from the palm of just one hand. HandEnergy is designed to produce electricity at wall socket speeds through gentle wrist rotations.
When it comes to harvesting free energy, solar technology likely springs to mind first. But despite portable solar panel products geared towards consumers, solar still suffers some practical limitations – there’s not much you can do indoors and/or when it’s cloudy outside.
Generating electricity from muscle movement is nothing new, as we’ve seen a variety of devices over the years. Products like the SOSCharger utilize the very common hand crank method, while the MiPwr Dynamo iPhone case and K-Tor Power Box rely on squeezing and pedaling, respectively. HandEnergy sets itself apart by allowing people to use a device in one hand while charging with the other, no matter where they may be.
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