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The Nintendo Switch has its own Dock that offers USB Power Delivery charging as well as USB data and HDMI connectivity for the Console. The Switch Dock comes with a 39 watts based Nintendo Switch AC Adapter but it should also support other USB Power Delivery enabled chargers like the BatPower PD6's Power Bank.

We first insert the Switch Console (with Joy Con Controllers) into the Switch Dock and then use the Dock to connect to a HDMI TV. We then attach the BatPower USB Type-C Adapter to the BatPower PD6 before plugging in to the Switch Dock's USB Type-C port. The BatPower starts to offer 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps), 36 watts (12 volts @ 3 amps), 45 watts (15 volts @ 3 amps) and 60 watts (20 volts @ 3 amps) as seen through the USB Power Delivery negotiations. These power profiles confirm that the BatPower PD6 only supports up to 60W and not 90W as claimed.

The Nintendo Switch Dock responds by only requesting 7.5 watts (15 volts @ 0.5 amps) from the BatPower PD6 which it accepts.

Later we also see that the Switch Dock requests to pull 45 watts (15 volts @ 3 amps) which the BatPower also complies.

However we observe that the Nintendo Switch Dock only starts charging with the BatPower PD6 almost 10 seconds after plug-in by pulling an initial 0.5 amps at 15 volts while attached with the Switch Console and Joy-Con Controllers. The Dock then quickly pulls current in between a 9.3 to 15.5 watts power band to support both the Console and Joy-Cons. The power drawn later increases slightly to the 9.3 to 17 watts band which shows the Dock actually consumes more power used to support the HDMI port connected to the TV.

The Nintendo Switch Dock was also seen to display similar USB Power Delivery charging behavior with the Nintendo Switch AC Adapter as seen in this review which shows that the Dock also works well with the BatPower PD6 if you don't have an AC adapter and need a quick power source.