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The Satechi 165W GaN Charger is the only multi-port GaN charger in our lab that actually sustains 140W on a single port while simultaneously powering 3 more devices at reasonable wattages. If you run a full desk setup (laptop + monitor + phone + tablet) from a single brick, this is the one that doesn’t compromise under sustained load.
165W is a specific target
A MacBook Pro 16 M3 Max can draw 140W sustained. An iPad Pro charges at 30W. An iPhone tops out at 27W. Add those and you’re at 197W peak, more than any single GaN charger can deliver — but in practice the phone and tablet are usually near full and only pulling 15W combined, which is why 165W works. The Satechi’s power distribution logic handles this dynamically: plug in a MacBook at peak load and the other ports cap at the remaining 25W total, plug in a fully-charged MacBook and the other ports can each pull their full rated output.
The form factor tradeoff
At 390g and 90×90×35 mm it’s the size of a deck of cards and about the weight of a thick phone — too heavy for travel, ideal for a desk setup. Comes with a 6-foot C13 AC cable for reach.
Bottom line: Best multi-port laptop brick for desk use. $120 gets you everything a laptop dock’s power supply would.