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By supporting up to 22.5 watts USB Power Delivery charging over Type-C, the Anker PowerCore 13400mAh Nintendo Switch Edition PD Portable Charger can be used to charge not only the Nintendo Switch but also latest phones like the Google Pixel 3 XL. Here we can see how power flows from the Anker power bank to the Google phone when connected over USB Power Delivery. 

When plugged in to the USB Type-C port of the Anker power bank, the Google Pixel 3 XL on a dead battery quickly pulls current at 5 volts rail startup voltage to initiate charging to about 8.3 watts (5.2 volts @ 1.6 amps). This briefly followed by a quick drop of current near to zero but after a hard reset both the voltage and current ramp up resulting in about 17 watts (9 volts @ 1.9 amps) charging. The current then goes down a bit but continues to increase steadily from about 1.7-1.9 amps. At some points the phone can be seen to max out charging by pulling close to 2 amps to draw around 18 watts (9 volts @ 2 amps) from the power bank. Click here to download the trace captured by the GRL-A1 power analyzer to see more details.

The Google Pixel 3 XL works well with the Anker PowerCore 13400mAh Nintendo Switch Edition PD Portable Charger to get almost similar charging as with its own supplied 18 watts Google charger from this review.

Download the A1 software from Granite River Labs here to view the trace.