With some rubber and salt water, wearables may soon charge themselves



June 18, 2016

Imagine charging your FitBit by simply wearing it while you walk.

While wearable devices are growing in popularity, they still share a common burden: The more complex the device, the shorter its battery life. Until perhaps now. In a paper published on Friday (June 17) in Science Advances, researchers outline a way to harvest energy from body movement using nothing more than salt water and a flexible rubber band.


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