Device Health and Support charge speed is very misleading - Pixel 10 Pro XL.

The numbers google shows in Device Health and Support are not good at all. I did some testing, the larger the claimed charge speed, the further from reality it got. All testing was done between 40-60 Battery% See here:

• PD2.0 charger: Google : 20Watts vs Meter : 18.99W
• PD3.0 charger: Google : 46watts vs Meter : 33.24W
• Google 45W charger: Google : 46watts vs Meter : 32.79W
• Pixel Snap Qi2.2 Charger + Google 45 charger : Google : 30W vs 14.97 Meter

So not only do we know 30Watts is not possible from Qi2.2's 25W max, it looks like Qi 2.0 speed if we could assume 100% efficiency. But in reality 70-95% is realistic. I tested with and without a case and Ringke Onyx Magnetic case made no effect on wireless charge speed. One other note, Qi charging takes some time to ramp up, so any readings takes as soon as its plugged in will be low. I would say 15 seconds is needed to ensure it reaches its max speed.

TLDR: Device Health and support greatly exaggerates higher charger speeds by about ~35% and Qi Charging by ~70%