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How USB Power Delivery Works Between the Targus 45W USB Type-C Laptop AC Wall Charger and HP Spectre x360 2017

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The Targus 45W USB Type-C Laptop AC Wall Charger (click here for Amazon pricing) and the Spectre x360 (2nd Generation 2017) both support charging over USB Power Delivery so let's see how well they work when connected together.

The Targus 45W USB Type-C Laptop AC Wall Charger starts communicating with the Spectre x360 (2nd Generation 2017) over USB Power Delivery by advertising its source capabilities of 15 watts (5 volts @ 3 amps), 36 watts (12 volts @ 3 amps), 37.5 watts (15 volts @ 2.5 amps). The notebook then requests to pull 37.5 watts (15 volts @ 2.5 amps) which the charger accepts.

 

The charger later declares not only the 15 watts (5 volts @ 3 amps), 36 watts (12 volts @ 3 amps), and 37.5 watts (15 volts @ 2.5 amps) it initially offered but also an additional power profile of 45 watts (20 volts @ 2.25 amps). The Spectre x360 (2nd Generation 2017) proceeds to request 45 watts (20 volts @ 2.25 amps) which is accepted by the charger.

 

While the Spectre x360 (2nd Generation 2017) is being charged on a 40% battery level, we can see that 40 watts (20 volts @ 2 amps) is initially being drawn before it eventually goes down to 24 watts (20 volts @ 1.2 amps) as the battery is almost full.

We can confirm that the Targus 45W USB Type-C Laptop AC Wall Charger works well the Spectre x360 (2nd Generation 2017) over its Thunderbolt 3 enabled USB Type-C port using USB Power Delivery.

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