Last year's OnePlus 8 Pro was the company's first model to support wireless charging, and they did it with a splash, adding support for a proprietary 30-watt "Warp" charger. According to leaks on the upcoming refresh, the 9 Pro will boost that to 50 watts, presumably speeding up the wireless charge rate even more.

Previously the OnePlus 9 pro was rumored to support 45-watt wireless charging. According to a report from frequent leaker Ishan Agarwal, the phone will launch alongside a sold-separately premium wireless charger, just like the last model. The OnePlus 9 Pro and the cheaper 9 model will both support standard Qi wireless charging, Agarwal says, though the non-Pro won't have access to those higher charging speeds. Last year the OnePlus 8 (sans Pro) was left without wireless charging capability.

Days after the initial leaks, OnePlus released a video of the 9 Pro charging wirelessly versus an iPhone on a Lightning cable, going from 1% to a full battery in just 43 minutes and change. A forum post confirms that the next gen version of the proprietary Warp wireless charger uses 50 watts. Combined with a dual-chambered battery and adjustments for the induction coils, it's approximately twice as fast as the charging in the 8 Pro, and can reach the same speed in horizontal mode on the Warp Charger.

The presumption is that OnePlus has an even playing field for the test above, which would mean a OnePlus 9 Pro versus an iPhone 12 with its fastest wired charging, using a 20 watt adapter. Of course, we don't see what adapter the iPhone is using. The OnePlus 9 and 9 Pro will boost wired charging to 65 watts, with a full 1-to-100 charge taking just 29 minutes.

Various leaks of both devices have already occurred, showing us the rear camera design and a few other hardware options. There are also rumors of a OnePlus 9 Lite, giving the company the same three-model flagship approach as Samsung. The announcement is confirmed and scheduled for March 23rd.