Question

What is wifi charger ?

Answer 1

I heard that some engineering students have created a device that could charge a phone’s battery using Wi-Fi. The device uses so-called metamaterials that can capture energy waves and convert them into an electric current.

Answer 2

Wireless charging has become a common feature in high-end smartphones, but the technology isstill in its infancy. Not only does it require the device to be within an inch or two of the emitter, the power output is not high enough to power anything indefinitely. So are your electronics doomed to always be tethered to the wall? Not if Chun Rim, professor of Nuclear & Quantum Engineering at Korea Advanced Institute of Science and Technology (KAIST) has anything to say about it. Rim and his team have developed an inductive wireless charging system than can beam power up to five meters away.