Lenovo's Moto Droid Z supports USB Power Delivery and using software from Granite River Labs, we observed the communication between this phone and the Apple 29W USB-C Power Adapter.
The Apple 29W USB-C Power Adapter declares it can provide 12 watts (5 volts @ 2.4 amps) and 29.6 watts (14.8 volts @ 2 amps).
The Moto Droid Z then requests 5 volts @ 2.4 amps from the Apple 29W USB-C Power Adapter.
We confirmed this through the oscilloscope, where we see the following values:
The voltage was initially 5.3 volts, but dropped to 4.6 volts while the current varied between 2.2 and 2.4 amps.
In order to experience firsthand how well the Apple 29W USB-C Power Adapter charges the Moto Z Droid, we drained the phone to about 7% battery and monitored its progress as it charged.
Overall, it takes the Moto Z Droid an hour and 15 minutes to fully charge with the Apple 29W USB-C Power Adapter.