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What Happens When the Sony Xperia XZ1 Phone is Plugged In to the Anker PowerCore 13400mAh Nintendo Switch Edition PD Portable Charger Over USB Power Delivery

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The Anker PowerCore 13400mAh Nintendo Switch Edition PD Portable Charger was primarily sold to support up to 22.5 watts of charging for the Nintendo Switch using USB Power Delivery 2.0 technology. Here we show how the Anker power bank can also be used to charge the Sony Xperia XZ1  over USB Type-C when the phone's battery is fully depleted. 

When the Xperia XZ1 and the Anker PowerCore 13400mAh Nintendo Switch Edition PD Portable Charger were both connected over Type-C, we observed USB Power Delivery negotiations during charging. With a 5 volts rail starting voltage, the phone initially pulled up to about 1 amps current to draw around 5.1 watts (5.1 volts @ 1 amps) from the power bank. This briefly followed by a sudden drop in current and voltage to near zero resulting in almost no charging. The phone then quickly pulled current again to resume charging to around 10.4 watts (5.4 volts @ 2 amps). The current went down slightly after that where power was drawn almost consistently at about 9.4 watts (5.2 volts @ 1.8 amps). This continued on for few seconds when the phone then repeated charging at around 10.4 watts (5.4 volts @ 2 amps). For more details click here to download the trace captured by the GRL-A1 power analyzer.

The Xperia XZ1 did not seem to pull any higher current to keep charging at around 10 watts thus not taking full advantage of the 15 watts minimum that is typically possible with USB Power Delivery technology. Besides USB Power Delivery 2.0 the Xperia XZ1 also supports Qualcomm Quick Charge 3.0 based charging where a similar level of charging can be seen in this review.

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

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