LG’s latest flagship Android smartphone, the G6, is yet another new phone to come with a USB Type-C port. Sporting a Qualcomm Snapdragon 821 SoC, this USB-C port also supports fast charging based on Qualcomm’s Quick Charge 3.0 tech. With the bundled QC3 adapter, the phone will charge at a maximum 9V at 1.8A (16.2W).
But not all adapters support Quick Charge 3.0; and certainly, even fewer USB-C adapters support Qualcomm’s fast charging standard. What if you have, say, a USB-C adapter that supports USB Power Delivery instead?
I happened to have an Apple 87W USB-C power adapter for the new MacBook Pros, a USB-PD charge that can do 20.2V/4.3A and 9V/3A, so I decided to do a quick test. With the G6’s battery drained down to 5%, the Apple charger was measured to be topping up the G6’s charge at around 8.8V at 1.8A.