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USB Power Delivery Charging Didn't Go Well with the Huawei Mate 10 Pro and Nintendo Switch AC Adapter

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It's rather unfortunate that the Huawei Mate 10 Pro doesn't seem to charge properly with the Nintendo Switch AC Adapter despite being the first Huawei Mate phone to support USB Power Delivery over the USB Type-C interface. After plugging in the Huawei Mate 10 Pro at 91% battery level to the Nintendo Switch AC Adapter, no USB Power Delivery charging was observed to happen in the first 10 seconds. This then followed by rapidly changing voltage and current which didn't allow the phone to draw any stable power thus resulting in no proper charging. Click here to download the trace captured by the GRL-A1 power analyzer to see more details.

Note the Nintendo Switch AC Adapter ships with the Nintendo Switch to provide up to 39 watts (15 volts @ 2.6 amps) charging for the Switch using USB Power Delivery over USB Type-C.

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

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