OnePlus has confirmed that the OnePlus 9 Pro supports Warp Charge Wireless 50, its next-generation of wireless charging. According to the company, the new standard will recharge the OnePlus 9 Pro within 43 minutes. The new Warp Charge 50 Wireless Charger will feature a few other improvements over the discontinued 30 W model, too.
https://www.notebookcheck.net/The-OnePlus-Warp-Charge-50-Wireless-Charger-will-feature-several-improvements-over-the-30-W-version.528370.0.html