MWC Shanghai is officially underway, and Oppo used the event to showcase a prototype air charger that works in tandem with its oppo X 2021 concept. A short 30-second video shows the phone charging all the time, from laying on the surface to arm’s length.
There’s not much detail on how Oppo’s implementation works, but the well-known tip Digital Chat Station claims that Opp’s air charging speeds can reach up to 7.5 W.
Digital talk station clarification
As early as April 1, Oppo teased a similar air charging technology called FreeVOOC. It was pointed out that this application achieved a stable charging power of 5-10 W within 10 meters and relied on special built-in coils in the phone itself. It remains to be seen how the new implementation works and when we will see it in a commercially available form.
Xiaomi is another manufacturer that works on air filling and even unveiled its development last month. The Mi Air Charge relies on a large cube transmitter that transmits up to 5W to compatible phones with built-in signal signals and receivers a few meters away.
Source (in Chinese) | Over 1 • Over 2