World’s First Battery-Free Cell Phone Uses Only Ambient Power – July 12, 2017

And it’s actually surprisingly small!

Credit: University of Washington


Imagine a world where you never have to worry about your cell phone battery dying. This may soon become a reality, as researchers at the University of Washington have invented a battery-free cell phone that works with the power of ambient light and radio waves. The research was published July 1st in the journal Proceedings of the ACM, titledBattery-Free Cellphone.

Read more at: True Acvivist