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  • Does a USB hub work to charge multiple phones?

    From Charlie@21:1/5 to All on Mon Apr 29 22:10:00 2024
    In a pinch, when traveling light, could you use a high power single port charger with a USB hub connected to it to charge multiple phones?

    Would it work?

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  • From Theo@21:1/5 to Charlie on Tue Apr 30 08:40:38 2024
    Charlie <charlie@nospam.com> wrote:
    In a pinch, when traveling light, could you use a high power single port charger with a USB hub connected to it to charge multiple phones?

    Would it work?

    It may not pass Power Delivery (probably wouldn't) so you'd be limited to 'slow' charging from 500mA to maybe 2A. But if you don't mind that then it should work for say charging overnight at the slower rate (eg phones with a 20Wh battery charge in 8 hours at 500mA).

    Theo

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  • From Arno Welzel@21:1/5 to All on Tue Apr 30 10:38:47 2024
    Charlie, 2024-04-30 06:10:

    In a pinch, when traveling light, could you use a high power single port charger with a USB hub connected to it to charge multiple phones?

    Not really.

    Protocols like USP-PD or QuickCharge require a direct connection between
    the power source and the device being charged, were USB-PD requires
    USB-C as well.

    USB hubs are usually not designed to power devices except when they come
    with their own power supply to make sure that every port can be powered
    with 4.5 (USB 2) to 9 watts (USB 3). They will most likely only delivery
    100 mA per port and refuse any higher requirements.

    A better choice is to use a charger with multiple ports. Up to 4 ports
    in a single charger are not hard to find. There are also power banks
    which provide multiple ports.

    --
    Arno Welzel
    https://arnowelzel.de

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  • From AJL@21:1/5 to Charlie on Tue Apr 30 16:20:31 2024
    Charlie <charlie@nospam.com> wrote:

    In a pinch, when traveling light, could you use a high power single port charger with a USB hub connected to it to charge multiple phones?
    Would it work?

    I do it and it works for me. I often charge several different types of
    devices off the same hub: tablets, phone, and I even sometimes run a
    digital clock at the same time. It of course depends on the charger and the
    hub, but it's easy to test. Just check the devices to see if they're
    charging. It does of course take longer to charge. I do it because I have a
    lot of devices (toys) to play with and I can charge and keep them topped up
    between use. Again, testing is the key. If it works at home it'll probably
    work on a trip...

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