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Here's what the article claims:

"Now tell me, do you have Apple's 20W USB-C charging brick to use with this? It doesn't come with a charging brick either, and to get the advertised speeds then you need to use that brick. Literally no other charging bricks will get that speed."

Here's what's actually true:

Any USB-C charger with a port on it capable of 20W or higher (including all extant USB-C Mac chargers and all extant USB-C PC chargers) will drive MagSafe at full power, and the author probably knew this, but it's inconvenient to acknowledge it. Such chargers are extremely common.



Actually, per this article [1] that may not be the case. Copying a comment from reddit:

> PD has certain charging ‘profiles’.

> For example Apples 30W USB-C charger can work at:

> 15 watts (5 volts @ 3 amps), 27 watts (9 volts @ 3 amps), 30 watts (15 volts @ 2 amps), and 30 watts (20 volts @ 1.5 amps)

> The MagSafe puck supports none of those for some reason. So it drops down to ~5W which is a safe backup amount for most devices.

> The new 20W charger appears to have a new profile it supports for the full 20W, which so far seems to be unique to that charger + MagSafe combo. It’s... messy.

[1]: https://appleinsider.com/articles/20/10/27/magsafe-15w-fast-...


Would be interesting to see what PD profile it's negotiating here that is different. I wouldn't be surprised if Anker et al. come out with MagSafe 15W compatible chargers shortly. Seems like it might be a 9V 1.8A profile or something silly?

I'm surprised some of these tech YouTubers that do this stuff don't have a proper USB-PD profile analyzer. Something like this could find all the secrets necessary for Anker to recreate a functional brick: https://www.totalphase.com/products/usb-power-delivery-analy...


Thank you for the correction!


Not sure whether you've tested your claims, I've heard people complaining (loudly!) that their anker chargers and powerbanks with PD (and rated with needed wattage) are not working, because Apple opted for some really strange voltage profile negotiation, that only small portion of the existing chargers support.


https://www.amazon.com/stores/page/62D963CD-BE12-41FB-A840-B...

Anker has about a ton of these, including 20W or higher ones, under $20.




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