How fast do the USB-C ports on the M1/M2 MacBook Air charge external devices like an iPhone or iPad?

[Citizen45]

Anyone know how to test the power output of the USB Thunderbolt Ports on the M1/M2 Air?

 

[zonai]

I try using CoconutBattery sometimes and the max it shows is 15W. If you go into System Report it will also show the USB power being requested/consumed by the USB port but it rarely exceeds 2400mAh so not sure how accurate that is.

 

[LockOn2B]

From what I’ve found it has power states ranging from 2.5 watts to 5, 9.5, 12 or 15 watts

 

[fromgophonetoiphone]

From what I’ve found it has power states ranging from 2.5 watts to 5, 9.5, 12 or 15 watts

How do you find this out?

 

[transmaster]

How do you find this out?

Go on Amazon and look for a USB Digital Multimeter, I have a couple made by Drok. These are dead handy to have, and cheap. You plug one side into the powered USB port, it will tell you its output voltage, then plug your device into it. It will tell you not only the output voltage, but amp's being drawn, Watts's, time charging etc, etc.

 

[LockOn2B]

How do you find this out?

Multiplied the following by 5 volts:

Also got this reading from coconutBattery

 

[StoneJack]

As fast as you need 🤣🤣🤣