PPS on top of PD and Quick Charge
Besides Power Delivery 3.0 and Quick Charge 3.0, this F20000 supports PPS, the Programmable Power Supply. With PPS the power bank changes its voltage in very fine steps exactly as the phone requests, and some newer phones use it for fast charging. Up to 20 W is available over USB Power Delivery, while the second port charges another device at the same time.