Some time ago, Xiaomi held a developer conference. The biggest highlight of this developer conference is that Xiaomi released some charging details of 100W super wired fast charge, and also showed on the scene that the 4000mAh capacity battery can be full in 17 minutes. It is understood that the Xiaomi 100W super wired fast charge uses a series dual cell design, and two series battery technology can pump 2:1 charge for a battery with over 98% ultra-high efficiency. And the selection of very low impedance, high cost components.
The fastest reported is about 15 minutes. Depends on how much power is it? High power charging is fast.