By HIGHLIGHTS OnePlus 9 series could offer 65W fast charging support OnePlus 9 series rumoured to launch in mid-March OnePlus 9 series battery details tipped ahead of purported launch in March A new OnePlus 9 and OnePlus 9 Pro leak has tipped the battery details of the upcoming flagship smartphones. The OnePlus 9 series is rumoured to launch by mid-March but the company is yet to kickstart its marketing campaign. Earlier this month, real-life images of the alleged OnePlus 9 Pro were leaked online showing off a Hasselblad camera system. According to a post by a popular tipster, Max Jambor on Twitter, the OnePlus 9 and OnePlus 9 Pro will be equipped with a 4,500mAh battery. Additionally, the tipster also clarified that the upcoming phones in the OnePlus 9 series will have fast charging adapter in-the-box. In comparison, this is slightly larger than the battery on the OnePlus 8 while the OnePlus 8T is equipped with 4,500mAh battery with 65W fast charging support.