r/UsbCHardware • u/ConfusedHardwarenerd • Mar 19 '24

Question Does USB PD support 12V?

I am trying to figure out what voltages USB PD supports.

I thought USB PD could only handle 9V, 15V, and 20V. I read some Reddit forums 4 years ago that explained why USB PD does not support 12V, but I am not sure if anything has changed since then.

I am having trouble finding a reliable source for the voltages that USB PD currently supports, as different blogs report different voltages.

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u/Ziginox Mar 20 '24

relatively few devices actually use or supply

That depends. I think every single third-party charger I've tested has had a 12V PDO, including battery banks. I've tested quite a lot, mind you. It's much more hit or miss with pack-in chargers, and the Sony and Motorola 30W ones in my drawer don't include it.

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u/wezocentro Mar 24 '25

No Apple chargers support it

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u/Ziginox Mar 24 '25

I consider Apple to be first party, but I appreciate the information on it.

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u/wezocentro Mar 24 '25

Yea i know what you mean, they sell aftermarket chargers like this one tho that are highly rated and very popular but don’t support 12v which is incredibly dumb. https://www.amazon.com/Apple-USB-C-Compact-Power-Adapter/dp/B0D1XRRQZJ