Start with evidence
Run the tests that separate the likely branches
Charger Wattage MatchCompare a device's entered power requirement with a charger's rated wattage while keeping USB-PD/PPS and voltage-profile limits explicit.
Run →USB-C Cable Power Rating CheckCompare an entered cable wattage rating with the power you want to carry, while keeping protocol/e-marker limits explicit.
Run →Battery Charge Time CalculatorEstimate battery charging time from energy capacity, charger power and entered charging efficiency.
Run →Decision table
What the observation changes
ObservationWhat it meansNext action
Fast charge is slow only near full batteryCharging normally tapers as state of charge rises.Compare from a similar low starting percentage.
Different known PPS charger improves speedOriginal adapter/profile or cable is the likely limiter.Use the compatible charger/cable path.
All known-good chargers are intermittentNot explained by normal taper alone.Inspect USB-C connector and native Pixel diagnostics/support.
Sequence
Work from reversible checks to escalation
- 01
Read adapter PPS/output profiles.
- 02
Use a known-good USB-C cable.
- 03
Let the phone cool and reduce heavy use.
- 04
Compare over a defined charge window rather than a few minutes.
Likely areas
Keep these branches separate
Charger lacks PPS profileCable limitationBattery already high state of chargeHeat/active use
Repair boundary
When to stop changing settings
If charging disconnects, the connector is damaged/hot, or multiple compatible chargers behave abnormally, use Google Pixel support.