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To find out how well your LG G5 phone can work with the BatPower PD6 Power Bank apart from its own AC Adapter (which we reviewed here), we look at how both the power bank and phone communicate over USB Power Delivery.

Once the BatPower PD6 and LG G5 are linked up via the BatPower USB Type-C Adapter in between, we can see from the USB Power Delivery negotiations that the BatPower PD6 is constantly showing that it supports 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps), 36 watts (12 volts @ 3 amps), 45 watts (15 volts @ 3 amps) and 60 watts (20 volts @ 3 amps) power profiles. Instead of 90W charging as promised by the power bank, here it only offers up to 60W.

The LG G5 from a fully depleted battery takes some time to eventually request 18 watts (9 volts @ 2 amps) from the BatPower PD6 which it then accepts. 

On a fully drained battery, we can see that the LG G5 starts off drawing around 9 watts (5 volts @ 1.8 amps) before the current becomes unstable as the voltage goes up to 9 volts. It takes a few seconds for the phone to finally charge properly at around 10.1 watts (9.2 volts @ 1.1 amps) with the BatPower PD6. The LG G5 also goes through similar charging with the BatPower PD6's AC Adapter as recently observed over USB Power Delivery.