this post was submitted on 21 Mar 2024
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Technology

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[–] [email protected] -4 points 8 months ago* (last edited 8 months ago) (4 children)

I've never seen one with that much power for phones... at 5v that would be 6A for the 30watts one... must be designed for laptops

[–] [email protected] 17 points 7 months ago

Basically every phone made in the last 5 years will charge at over 5v for "quick charging".

The USB is typically only up to 3 amps max at any voltage less than 20.

[–] [email protected] 10 points 8 months ago (1 children)

My cheap(ish) phone has ~30W charger too. It's something like 2,5A/12V or 1,5A/18V, which is pretty common these days. I believe I've seen phones with up to 100W charging capability (not sure about longevity though).

[–] [email protected] 2 points 7 months ago (1 children)

My work laptop (MacBook) is ~100W charging, but only ~5A at ~20V, and ~3A at anything under 20V.

I'm guessing phones with super fast charging work similarly.

[–] [email protected] 2 points 7 months ago

Indeed, just check some PD charger specs, there are usually all the different volt/amp readings the charger can produce.

[–] [email protected] 4 points 7 months ago

Depends on the phone. Oneplus has a 65 watt charger.

[–] [email protected] 3 points 8 months ago* (last edited 8 months ago)

It looks like it'll only do 3A over 5V which is typical. You'll need to connect something that can accept 15 or 20V to get the full 45W. The upside of these is it supports 15V for devices that don't go higher, since it seems to be the least common supported voltage for usb pd chargers.