Scientists develop world’s first battery-free cell phone

Scientists, including those of Indian origin, have invented the first battery-less cell phone that consumes almost zero power and runs by harvesting energy from ambient radio signals or light. The team also made Skype calls using its battery-free phone, demonstrating that the prototype made of commercial, off-the-shelf components can receive and transmit speech and communicate with a base station. “We have built what we believe is the first functioning cell phone that consumes almost zero power,” said Shyam Gollakota, associate professor at the University of Washington (UW) in the US.