I’m Charging My Toothbrush With Wireless Power Over Distance—and It’s a Trip

I used an Emporia smart plug to track the transmitter’s energy usage. The smart plug also lets me turn the Wi-Charge system on or off remotely, though I have left it on all the time for the past month. With an average draw of 7 watts, it has been pulling roughly 1 kilowatt hour weekly. … Read more