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computers / comp.mobile.android / Does a USB hub work to charge multiple phones?

Does a USB hub work to charge multiple phones?

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From: charlie@nospam.com (Charlie)
Newsgroups: comp.mobile.android
Subject: Does a USB hub work to charge multiple phones?
Date: Mon, 29 Apr 2024 22:10:00 -0600
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by: Charlie - Tue, 30 Apr 2024 04:10 UTC

Re: Does a USB hub work to charge multiple phones?

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From: theom+news@chiark.greenend.org.uk (Theo)
Newsgroups: comp.mobile.android
Subject: Re: Does a USB hub work to charge multiple phones?
Date: 30 Apr 2024 08:40:38 +0100 (BST)
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by: Theo - Tue, 30 Apr 2024 07:40 UTC

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

Re: Does a USB hub work to charge multiple phones?

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From: usenet@arnowelzel.de (Arno Welzel)
Newsgroups: comp.mobile.android
Subject: Re: Does a USB hub work to charge multiple phones?
Date: Tue, 30 Apr 2024 10:38:47 +0200
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by: Arno Welzel - Tue, 30 Apr 2024 08:38 UTC

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

Re: Does a USB hub work to charge multiple phones?

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From: noemail@none.com (AJL)
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Subject: Re: Does a USB hub work to charge multiple phones?
Date: Tue, 30 Apr 2024 16:20:31 -0000 (UTC)
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by: AJL - Tue, 30 Apr 2024 16:20 UTC

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...

Subject	Author
Does a USB hub work to charge multiple phones?	Charlie
Re: Does a USB hub work to charge multiple phones?	Theo
Re: Does a USB hub work to charge multiple phones?	AJL
Re: Does a USB hub work to charge multiple phones?	Arno Welzel