No batteries! Wireless tech recycles airborne radio waves
DF-331 - 200m EXTRA Plug-In Battery-Free Wireless Doorbell | hopewell
Battery-free, wireless sensors for full-body pressure and temperature mapping | Science Translational Medicine
Wireless, battery-free, flexible, miniaturized dosimeters monitor exposure to solar radiation and to light for phototherapy | Science Translational Medicine
Battery-free wireless devices that float in the wind
Battery FREE Wireless Optical Mouse With Mousepad
Wireless, Battery-free Electronic 'Stickers' Gauge Forces Between Touching Objects
OPTICAL MOUSE BATTERY FREE AND WIRELESS
Battery FREE Wireless Optical Mouse With Mousepad
Amazon.com: Key Connection WLBF95 Battery Free Wireless Optical Mouse and Pad (Round) with Vertical and Horizontal Scroll : Electronics
MIT engineers build a battery-free, wireless underwater camera | MIT News | Massachusetts Institute of Technology
Battery-free, wireless soft sensors for continuous multi-site measurements of pressure and temperature from patients at risk for pressure injuries | Nature Communications