The TUV Rheinland body has reportedly certified a new power supply unit (PSU) from the OEM OnePlus. This apparent next-gen Warp Charger is rated for a maximal rate of 10 volts (V)/6.5 amps (A) - or 65 watts (W). Therefore, it could boost charging speeds using this company's in-house system considerably.
https://www.notebookcheck.net/OnePlus-next-gen-flagship-could-ship-with-a-65W-charger.464314.0.html