The US Army and Marine Corps have long been the beneficiaries of some of the most audacious and innovative technologies ever created, and this is certainly the case with their incorporation of the PowerWalk Kinetic Energy Harvester. This is a surprisingly lightweight device that can be worn around soldiers' knees in order to recharge their batteries while they're on the move.
The device features a gearbox that is capable of converting the rotation of the knee into electrical power. The device is capable of producing anywhere between 10 and 12 watts of electricity.
The PowerWalk's biggest advantage is the fact that it allows soldiers to have their devices recharged without having to stop their activities and show up at a charging station or facility.
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