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by cesarb 2449 days ago
> Pretty sure USB-C headphones shouldn't be charged with a USB-C Macbook Pro wall charger.

Unless explicitly negotiated by both ends, every USB-C charger outputs the same boring 5 volts as classic USB, so the headphones should charge just fine.

1 comments

The major exception to this is the Nintendo Switch that, due to shit design on Nintendo's part, can asplode itself.
The Switch dock had some implementation issues but they didn't break anything.

The only time things break is when you attach a broken charger that outputs 9 volts onto a wire that's supposed to be doing 2 volt signals.

Only when used with another fault charger, which basically are extinct now.
Switch charges just fine from a MacBook power adapter. The issues are hugely overblown.
What's the problem with it?
They are wrong. The Switch console itself is USB-C standard compliant. The dock has a slightly smaller plug to make it easier to dock / undock the console. 3rd parties try to replicate the smaller plug but don't get the tolerances right causing a miswiring.
I can’t charge my phone with the Nintendo Switch charger, it switches on and off repeatedly and doesn't charge. And my other USB-C chargers don't negotiate the power needed with the Switch so it charges very slowly if you don't use the included charger.
My phone charges fine with a Nintendo Switch power adapter.

In fact, I am doing it right now.

Output on the adapter reads: 5v@1.5A/15v@2.6A

I charge the Switch console just fine with a PD USB-C charger. PD is very negotiable and the Switch only supports a few voltages so your charger must support the same voltages.
As far as I understand it (correct me if I'm wrong), every proper charger is supposed to support the exact same list of power combinations from 0 up to whatever its max wattage is.

The switch dock demands 39 watts, which implies 15 volts, but the switch itself will negotiate any voltage when standalone.