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Xiaomi and Motorola Show Wireless Charging Prototypes
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Xiaomi announced its  Mi Air Charge,  a brand new that offers wireless charging from across the room. Yes, wireless charging from far away. The Mi Air Charge is a box plugged that provides wireless charging over the air to a device that’s within “several meters” of a charging station. 

• No wires, no charging stands or mats, no specific phone location required. 
• You just have to have your phone, smartwatches, or other wearable devices near enough to the “several meter” (3-9ft?) range.
• Physical obstacles apparently don’t get in the way or reduce charging efficiency.
• Xiaomi has 17 patents and a full marketing post about what it is.
• To make it work in smartphones, a set of antenna arrays are also required, so no phone or device you own today will work with this.
• The Mi Air Charge looks like a huge box that delivers a 5W of power. That’s not much at all! 
• Xiaomi said it is a “self-developed isolated charging pile has five phase interference antennas built in, which can accurately detect the location of the smartphone. A phase control array composed of 144 antennas transmits millimeter-wide waves directly to the phone through beamforming.”

 
The (current model) physical Air Charge device is huge: as tall as a couch and about half as wide. No smartphone has it, and Xiaomi isn’t committing to a release yet, and it’s more like a proof of concept being real, even if the proof is flawed. 
 
Motorola also has a new air-to-air charging solution, just like Mi Air Charge.

• Seemingly announced to distract from Xiaomi’s product, Lenovo China’s General Manager Chen Jin popped a video of the tech onto Weibo, hinting that it may come to future Motorola Edge devices.
• In doing so, the Lenovo GM may have somewhat legitimized Xiaomi’s announcement.