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nlistgarten

macrumors member
Original poster
Feb 19, 2016
47
16
San Mateo, California
Hey everyone! I recently got a 16" M1 Max MacBook Pro and one of my favorite features I didn't realize I would get is fast-charging my iPhone via USB-C to Lightning from the MacBook Pro. This leads to my question:

Does anyone here know what the maximum charging wattage for downstream devices from the 2021 MacBook Pro is? It's definitely enough to fast-charge an iPhone, but is it 10W, 20W, 30W, or more? I'm not looking for anecdotes; I'm looking for someone who has tested it empirically in some way, like with a USB-C wattage meter. Thanks in advance for your answers!
 
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