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macrumors bot
Original poster
Apr 12, 2001

Apple's upcoming MagSafe Duo Charger pairs a MagSafe iPhone charger with an Apple Watch charging puck, but as noted by Bloomberg's Mark Gurman, Apple has recently updated the product description to note that the MagSafe portion of the charger won't charge at the full 15 watts supported by the standalone MagSafe charger.


Neither the basic MagSafe Charger nor the MagSafe Duo Charger ships with a power adapter, with Apple noting that a 20-watt or greater USB-C adapter is recommended for the basic MagSafe Charger in order to deliver the maximum 15 watts of power supported by MagSafe. (The iPhone 12 mini can charge at a maximum of 12 watts over MagSafe, while all other iPhone 12 models support 15 watts.)

Apple initially recommended that the MagSafe Duo Charger also be used with a 20-watt adapter, leading some potential customers to wonder whether it would be able to deliver the full 15 watts of power to an iPhone while simultaneously charging an Apple Watch.

As it turns out, it won't. According to the updated product description, the MagSafe Duo Charger can only deliver 11 watts of power when paired with a 20-watt USB-C adapter, and 14 watts when paired with a 27-watt or higher USB-C adapter.

-20W USB-C Power Adapter (sold separately) for faster wireless charging up to 11W
-27W or higher USB-C Power Adapter (sold separately) for faster wireless charging up to 14W
Apple's MagSafe system continually regulates the charge being delivered to a connected iPhone based on heat and other factors, so even a regular MagSafe Charger generally won't deliver a constant 15 watts, but still, the fact that the MagSafe Duo Charger delivers lower peak power than that may be concerning to some potential customers.

Apple still has not announced a launch date for the MagSafe Duo Charger, which is priced at $129 without a power adapter. The charger continues to be listed simply as "Coming soon."

Article Link: Apple's MagSafe Duo Charger Unable to Charge iPhones at Full 15-Watt Power
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Lounge vibes 05

macrumors 68020
May 30, 2016
I just returned my regular magsafe to get a duo when it comes out.
also, I kind of already assumed this. My guess was that the Apple Watch portion was already 5 W or less, so a 20 W brick definitely would not let it go all the way up to 15 W On the other side.

Lounge vibes 05

macrumors 68020
May 30, 2016
I miss the old Macbook Magsafe that would actually charge at a decent speed, easily detach, and all of that.
This is just getting ridiculous
How is this getting ridiculous?
The 20 W brick lets a regular individual magsafe charger charge your phone at 15 W.
add an Apple Watch puck taking some of that juice, and it’s not gonna get the full 15 W on the other side. This is just obvious stuff


macrumors 68030
Oct 25, 2008
Wow, from Apple creating the best CPU in over a decade to this junk?

The regular MagSafe doesn't put out full power unless you use the 20 watt adapter specifically, while the MagSafe duo doesn't work full capacity unless you use a higher wattage charger. Then turn around and use the higher powered adapter with regular MagSafe and be limited to 10 watts!


macrumors 601
May 30, 2010
Cheers Apple. I bought an extra 20W charger when I got the MagSafe cable for use with the future Duo - as this was the recommended charger.

You now say I need a 27W charger.

Never mind, I can just go and exchange it for a 27W one.

Oh wait you don’t make one.

What’s going on!


macrumors 68030
Jul 11, 2009
I'm going to dissent from most of the posts here and predict that this will be a popular accessory. The magnets ensure a reliable charge (as opposed to most wireless chargers) and the watch half permits nightstand mode or flat charging at the user's option -- a useful and surprisingly rare feature. Most users will be using this at night, so the lower charging speed will be plenty fast enough.

That said, I'm concerned about the environmental impact of chargers that lose so much power (compared to plug-in solutions). Is anyone aware of solid research on that issue?


Jul 25, 2016
Gives me hope that Apple might realize they’ve pushed themselves into another thermal corner with this gimmicky tosh that is “MagSafe” (RIP original beloved MagSafe), scrap the future portless phone nonsense for now, and just give their customers what they’ve always wanted for the last 3 years: USB-C iPhones with larger batteries.


macrumors demi-god
Aug 28, 2015
Annnnnnnnd that's the deal breaker for me. Duo charger is now dead to me.

I didn't mind the delay, lack of charger brick, lack of USB-C, or price but the fact that MagSafe charging can't reach peak power turns me off as a tech geek. I went from buying the Duo charger to keeping my Apple Watch Dock and separate MagSafe charger.


Mar 24, 2015
MagSage charger are making my iPhone really hot while charging :( Anyone experiencing this problem.
Is it getting hotter than, say, charging your phone on a lightning cable using a MacBook charger? It could be just the higher wattage rate. (Still have my MagSafe charger on “prepared for shipping” so I’m hoping it’s the same kind of warm)
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