GTrusted
Ever wondered how long it takes for the Google Pixel to charge with its own USB Power Delivery based charger?
The Google 18W USB-C Power Adapter was originally made to supply 15 watts (5 volts @ 3 amps) and 18 watts (9 volts @ 2 amps) to the Google Pixel phone. Let's see how well they perform over USB Power Delivery using the GRL-USB-PD-A1 software from Granite River Labs.
When plugged in over USB Type-C, initially we observe the Google 18W USB-C Power Adapter advertises 15 watts (5 volts @ 3 amps) and 18 watts (9 volts @ 2 amps) over multiple hard resets to charge the Google Pixel from a fully depleted battery.
We can see that the Google Pixel promptly responds by requesting 15 watts (5 volts @ 3 amps) and gets accepted by the charger.
When directly connected to the Google 18W USB-C Power Adapter, starting from zero charge the Google Pixel takes approximately 2 hours and 53 minutes to fully charge.
During the initial plugin at the first power request, the phone starts drawing around 15 watts (5.2 volts @ 2.9 amps) with its battery depleted. After about 34 minutes of quick charging, the phone drops the current down by half to about 1.5 amps @ 5.2 volts.
The current pulled gradually drops down to below 0.5 amps @ 5.1 volts after about 126 minutes of charging. The current then decreases further to near 0 amps with random spikes in between as the battery fills up.
Throughout the entire power charging cycle, we see the power pulled at most reached 15 watts during initial charging. For some reason, the Google Pixel doesn't take advantage of the max 18 watts available to charge faster with the Google 18W USB-C Power Adapter.
