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Choetech PD32-1C1U 32W Dual Port USB Type-C PD Wall Charger Can Power the Xiaomi Mi 5 Phone Using Qualcomm Quick Charge


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The Choetech PD32-1C1U 32W Dual Port USB Type-C PD Wall Charger can support charging two devices at the same time by plugging them into both of its USB Type-C and Type-A ports. The USB Type-C port supports USB Power Delivery 2.0 but we also see here that it allows charging a Qualcomm Quick Charge 3.0 enabled phone like the Xiaomi Mi 5 which doesn't support USB Power Delivery. Even though the Choetech charger is USB-IF certified, we observe Qualcomm Quick Charge negotiation when charging the Xiaomi Mi 5 phone.

When plugged in to the USB Type-C port of the Choetech charger, it took a few seconds for the Mi 5 to only start pulling current at initial voltage of 5 volts. As the voltage quickly rose up to a 9 volts rail, the current kept on decreasing down to near zero. After the voltage went back down to 5 volts rail, charging didn't really happen as almost no current was pulled for about 10 seconds. The current later began to step up to eventually allow the phone to charge at around 14 watts (5.4 volts @ 2.6 amps). Click here to download the trace captured by the GRL-A1 power analyzer to see more details. Note that this charger negotiated back down to around 5 volts while the Choetech PD51-1C1U 51W Dual Port USB Type-C PD Wall Charger (see this review) and Choetech PD72-1C3U 72W 4-Port USB Type-C PD Wall Charger (see this review) actually stayed at around 9 volts.

The Choetech PD32-1C1U 32W Dual Port USB Type-C PD Wall Charger is able to provide 14 watts charging to the Mi 5 which is more than the maximum 12 watts that the Xiaomi's own Qualcomm Quick Charge 3.0 charger can deliver. This shows that the Choetech charger can also use Qualcomm Quick Charge for charging besides USB Power Delivery 2.0.  

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


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