In accordance with some leaks and rumors, OnePlus has launched its first ever wireless charger today (April 14, 2020). This device is also compatible with devices besides the new 8 Pro phone, thanks to the Qi standard. It is rated to power its new companion flagship by about 50% in 30 minutes.
https://www.notebookcheck.net/OnePlus-launches-a-world-first-Warp-Wireless-Charger.461604.0.html