Macbook M1 Pro/Max Thunderport Wattage?

[ChpStcks]

Any source documentation on how fast the 3 thunderport/usbc ports can charge / wattage output? everything I search in google just gives me the wattage that the MBP can be charged at. or is that wattage passed through when other devices are connected? so for instance if I had a 140w charger for the MBP 16" could I charge another MBP 16" through USBC port at 140W?

 

[chrfr]

if I had a 140w charger for the MBP 16" could I charge another MBP 16" through USBC port at 140W?

Think about this for a minute... if the first 16" MBP is using most of that 140W for itself, how could it pass another 140W through a USB-C port to another computer?

 

[ChpStcks]

Think about this for a minute... if the first 16" MBP is using most of that 140W for itself, how could it pass another 140W through a USB-C port to another computer?

That did cross my mind once I pressed "post" but think the sentiment still exist. Maybe the 16" is 100% Charged? and just idle? Nonetheless any idea how much the max power output is?

 

[Sanpete]

Max wattage via USB-C is 100.

 

[astorre]

it took me 3s to google the answer, why even create a post for that????

 

[white7561]

AFAIK the MBP still uses the older PD on the type c which limits it to 100w. (I'm using a 100w charger on it when at other places and it shows 100w in the system info)

The new 140w charger is using the newer PD protocol version which supports much higher charging wattage.

 

[JPack]

Each of the ports can provide 15W.

That’s why the power adapter is 140W. Under full load, you can have devices pulling 15W from each port along with the power consumption of the computer itself.

 

[brosenz]

The new MacBook Pro 16 M1 Pro/Max comes with a USB-C 140W Charger who uses PD 3.1 for rapid charging at 28V/5A. If I use an old 87W Apple Charger who will charge at PD 20V/4.3A, instead of 28V/5A, meaning slow charge, would that benefit the battery life long term?