battery technology
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July 7, 2017

This primitive-looking mobile phone doesn’t require a battery!

A team of computer scientists and electrical engineers at the University of Washington have created what sounds almost impossible: a phone that works without a battery. The device can make as well as receive calls by using only a few microwatts of power, which it gets from light or ambient radio signals. The team has demonstrated this by making a Skype call with the prototype, showing that it can receive and transmit speech as well as communicate with a base station.

Professor Shyam Gollakota, who is part of the research team at the University of Washington, said he thinks that they have created the first cell phone that requires almost zero power. He also added, “To [...]

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