When Samsung announced that its new Super Fast Charging 2.0 system was based on USB PD, the industry rejoiced. Using an open standard, Galaxy users could choose from hundreds of third-party chargers in addition to Samsung's first-party options. The problem is that this has never been realized.
The major obstacle is the fact that Samsung's Super Fast Charging 2.0 (SFC 2.0) requires chargers to support two standards: USB Power Delivery 3.0 (USB PD 3.0) and Programmable Power Supply (PPS). USB PD 3.0 is quite easy to come by, but finding a charger or electric bank with the and PPS is another story.
While USB PD 3.0 allows supported devices to use fixed voltage levels to charge (e.g., 5V, 9V, 15V), PPS allows the power supply to communicate with the charging port and the battery to dynamically adjust the voltage and current based on current conditions. This allows the charger to ramp up to higher voltages when conditions allow and then slow down when the battery needs to cool down.
So it makes sense that Samsung would require both standards, but the fact remains that there are not many power banks that support both. In fact, I scoured the internet to go with my S20 Ultra pre-order and could only find one:
For $ 59.99, it's expensive, but it's only $ 10 more than the 45W power brick from Samsung. But this is a portable power bank that can charge your Galaxy S20 Ultra four times before it needs charging. And with Super Fast Charging 2.0, it means it can charge your S20 Ultra from 0% to 100% in less than 75 minutes.
Galaxy Note 10+ also comes with Samsung's Super Fast Charging technology, so this power bank will also charge up to 45W with the flagship at the end of 2019. Who knows how many more third-party manufacturers will support these standards, but at the moment you can take advantage of one of the few that do, especially considering it's such a good price.