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A comment on Apple's MacBook revival plan: Bring back old features. Parent comment

Re:Apple's MacBook revival plan: Bring back old features by Retric on Sunday January 17, 2021 @10:44AM (#25811588)
USB-C can’t charge nearly as quickly as a high power proprietary charger. In use USB-C needs to supply power for both charging and operating the laptop, so what might take 3 hours to charge with USB-C might take 20 minutes to charge with a dedicated connector.

That’s not to say every laptop’s proprietary charger will supply noticeably more than 100W, but many examples exist.

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Re:Apple's MacBook revival plan: Bring back old features by oblio on Sunday January 17, 2021 @11:05AM (#25811792)
I'd be surprised if a 13" Surface doesn't charge well enough at 100W, though.
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Re:Apple's MacBook revival plan: Bring back old features by Retric on Sunday January 17, 2021 @12:39PM (#25812805)
13” Surface laptops had up to 90Wh of battery. Batteries get hot when charging due to inefficiency, meaning it takes more than 90Wh to charge a 90Wh battery. Subtract the power demand while in use and your well over an hour to fully charge.

By comparison a quick charge to 80% in under 20 minutes while under full load should be possible assuming sufficient cooling and power. That’s not a huge deal most of the time, but it’s still plenty useful if your sharing a single outlet etc.

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Re:Apple's MacBook revival plan: Bring back old features by fastball on Sunday January 17, 2021 @05:37PM (#25815948)
I’m sorry, what laptop charger has a brick that’s over 100W?
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Re:Apple's MacBook revival plan: Bring back old features by Retric on Sunday January 17, 2021 @05:51PM (#25816072)
Here’s a 230W example: https://www.amazon.com/Charger-Adapter-GTX1070-RTX2070-RTX20...

Their still common with gaming laptops like Razor 15’s. It’s ancient at this point, but a friend used to have a dual GPU laptop that used 2 different AC adapters at the same time.

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Re:Apple's MacBook revival plan: Bring back old features by oblio on Sunday January 17, 2021 @05:46PM (#25816031)
There are some. Thinkpads can go to 135 and if I recall correctly, maybe even 170W.

The bricks weigh as much as an ultrabook, though :-D

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