[vvanders]

If your voltage matches one of the PD levels they work okay but many common voltages like 12v usually end up being very charger dependent. I've got one of the 12v pd triggers that on 9/10 of the PD enabled charges I've used just drops to 9v.

[transpute]

For auditing real-world behavior, some USB-c cables (and interposers) have tiny displays to report live voltage/current.