According to NPR, a Cleveland startup called Tremont Electric will make a flashlight-sized device that converts energy from walking into electrical current for recharging the batteries in personal electronics. Springs inside the device bounce up and down, causing a magnet to oscillate and create an electrical current. The device is currently on pre-order and should arrive in time for Christmas.
From the NPR story:
Mobile electronic devices like the iPhone only require 2.5 watts of power to fully recharge themselves, he [company founder Aaron LeMieux] says. “So, in the end, all we have to do is harvest 2.5 percent of your human walking energy, without you knowing it, and put it in your mobile electronic device.”
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