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What happens if you use the iVoler 75W USB Type C Charger to charge the Microsoft Lumia 950?

Using software from Granite River Labs to capture the USB Power Delivery Protocol transaction, we can confirm there is USB Power Delivery negotiation occurring between the iVoler 75W USB Type C Charger and the Microsoft Lumia 950.

Initially, the iVoler 75W USB Type C Charger first advertises that it supports 3 different PDO's (Power Data Objects): 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps), 45 watts (15 volts @ 3 amps).   The Microsoft Lumia 950  then requests 15 watts (5 volts @ 3 amps) from the iVoler 75W USB Type C Charger.

The iVoler 75W USB Type C Charger later offers an additional PDO of 20 volts @ 3 amps.

The Microsoft Lumia 950 then requests 15 watts (5 volts @ 3 amps) again from the iVoler 75W USB Type C Charger.

However, the actual current pulled by the Microsoft Lumia 950 from the iVoler 75W USB Type C Charger is closer to about 2.5 amps.

The Microsoft Lumia 950 in powered on state takes around 3 hour 20 minutes to charge completely with the iVoler 75W USB Type C Charger.