One of the most exciting early uses for MagSafe – Apple’s magnetic accessory system – looked to be the MagSafe Duo Charger – a wireless charger that could juice up two devices at once, so you can use it with your iPhone 12 along with an Apple Watch 6 or other device. However, not only is this very expensive, but it’s also now been revealed that it’s rather slow.

As spotted by Mark Gurman (a tech journalist at Bloomberg) Apple has updated its store page for the MagSafe Duo Charger, revealing that when paired with a 20W USB-C power adapter (which is sold separately) it will charge at 11W, and that it will top out at just 14W when paired with a 27W or above USB-C power adapter – which of course is also sold separately.
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https://www.techradar.com/news/sorry-iphone-12-owners-apples-magsafe-duo-charger-isnt-as-powerful-as-youd-hope