[schmidtleonard]

Have these gotten mature enough to actually use? A few years ago, every single one I tested would just give you a different voltage if it couldn't trigger the correct voltage, which is obviously terrible.

[Eisenstein]

They go to the next lowest voltage, because some PD capable supplies don't provide all the voltages. Most are missing 12V, unfortunately.

[rainbowzootsuit]

My experience is good so far with them, but it's good to get a couple of automobile lights to wire in series or parallel to load them.

As the saying goes: "With Ali Express you test, don't guess!"