WiFi Signals Could Power Small Electronics Without Any Batteries

Researchers have developed a technology that uses the radio frequency of WiFi signals to generate wireless green energy that could power small electronic devices without the need for a battery.   If the research of the team from the National University of Singapore (NUS) and Japan’s Tohoku University (TU) follows through the recent success in powering a light-emitting diode (LED) wirelessly to power small electronics, the need for batteries in small devices could diminish, easing the growing pressure on critical battery metals.  …