3 ms·
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 c
by Xavdidtheshadow 6y ago
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-charging-restricted-to-apple-20w-adapter https://appleinsider.com/articles/20/10/27/magsafe-15w-fast-...
- Bud 6y agoThank you for the correction!
- Kirby64 6y agoWould 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-analyzer/ https://www.totalphase.com/products/usb-power-delivery-analy...