Razer's Hyperflux wireless mouse is powered by its pad
 

Pads that wirelessly charge mice aren't new, but they are difficult to pull off, especially when appealing to the high-performance gaming crowd. We found Logitech's effort -- its PowerPlay system of mat and companion mice -- hit the right mix of reli...

https://www.engadget.com/2018/01/10/...ed-by-its-pad/