4 ms·

That analogy is silly. Two methods of propulsion is a good idea - when the wind is not blowing then use the engine. If the engine runs out of petroleum use the

That analogy is silly. Two methods of propulsion is a good idea - when the wind is not blowing then use the engine. If the engine runs out of petroleum use the engine. Having a proprietary power interface and a USB C interface that does the same thing is ridiculous.

Retric 6y ago
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.
- oblio 6y ago
  I'd be surprised if a 13" Surface doesn't charge well enough at 100W, though.
  - Retric 6y ago
    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.
    - fastball 6y ago
      I’m sorry, what laptop charger has a brick that’s over 100W?
      - oblio 6y ago
        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
      - Retric 6y ago
        Here’s a 230W example: https://www.amazon.com/Charger-Adapter-GTX1070-RTX2070-RTX2080/dp/B0874KKC3G/ 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.

Retric 6y ago

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.

oblio 6y ago
I'd be surprised if a 13" Surface doesn't charge well enough at 100W, though.
- Retric 6y ago
  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.
  - fastball 6y ago
    I’m sorry, what laptop charger has a brick that’s over 100W?
    - oblio 6y ago
      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
    - Retric 6y ago
      Here’s a 230W example: https://www.amazon.com/Charger-Adapter-GTX1070-RTX2070-RTX2080/dp/B0874KKC3G/ 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.