Did you know the average office worker takes 3,000 to 4,000 steps a day? Imagine if you could convert you walking to energy which could then be used to power your cellphone or MP3 player? Researchers from Canada and the United States have developed a knee brace that could collect energy every time the wearer “brakes the knee” after swinging the leg forward to take a step. It is similar to the way regenerative braking charges a battery in hybrid cars.
Interestingly, the researchers claim the device can power 10 cellphones with one minute of walking with the knee brace on. It weighs about 3.5 pounds, so imagine strapping your new MacBook Air (slightly lighter) to your knee. They plan to utilize the device to power artificial limbs.
But imagine powering your MP3 player or cellphone by simply walking while on your way to work or class.