topic Re: Suitable UPS for TalkTalk wifi hub in Technology

Suitable UPS for TalkTalk wifi hub

MickL — Wed, 03 Dec 2025 13:33:34 GMT

I'd like to add a UPS into my setup to avoid wifi being down during power cuts. The UPS I'm looking at has the 12v output rated as up to 3A, am I ok to use this for a TalkTalk Sagemcom dual band hub ? The mains adapter that came with the hub is rated as 12v / 1.5A

The UPS comes with automatic voltage regulation etc to avoid overcharges.

Cheers,

Mick

Re: Suitable UPS for TalkTalk wifi hub

siphosethu-TT — Wed, 03 Dec 2025 13:57:56 GMT

Hi there Mick, please note we don't provide UPS, so I won't have much information on that. allow me to ask @KeithFrench if he has any information on this.

Re: Suitable UPS for TalkTalk wifi hub

KeithFrench — Wed, 03 Dec 2025 14:58:56 GMT

Hi @MickL

With that type of UPS with a 12V DC connection, it is more complex to make the correct choice. It is much simpler to choose the type that has UK mains power outlets on it. The first thing is the power connector; without a micrometre, it is difficult to know the size. This article does inform how to measure it:-

https://electronics.stackexchange.com/questions/59595/how-can-i-tell-the-size-of-a-barrel-power-connector

Then the polarity must be considered, get that wrong & you will probably permanently damage the router.

It is far easier & safer to go down the route of a UPS with UK power outlets on it. If you have full fibre, then you would also need to connect the ONT to it, as well as the base station of any DECT phone system & possibly a Grandstream DVA (OK, I know the latter two are not Wi-Fi). Perhaps you would also need to add a PC or other mains-powered devices to the list.

What you buy would be down to you, as only you know how long you want the internal batteries in the UPS to last during a power cut. This is often specified in the unit's VA rating.

Re: Suitable UPS for TalkTalk wifi hub

siphosethu-TT — Wed, 03 Dec 2025 15:00:41 GMT

Thank you @KeithFrench, muchly appreciated.

Re: Suitable UPS for TalkTalk wifi hub

MickL — Thu, 04 Dec 2025 17:02:25 GMT

Thanks Keith, I hear what you're saying and agree that an AC supply would be safest but sadly my budget doesn't run to a UPS that will give a few hours of AC power. I'm comfortable with a DC UPS, just need to confirm polarity compatibility with the hub...the UPS I'm looking at has the centre contact +ve and the outer collar -ve. The 12v output is rated up to 3A, and the total power output from the UPS (across all sockets) is 35W. I think I'm ok with this, provided the plug fits ! It comes with 5.5x2.5, 5.5x2.1 and 5.5x1.9 plugs.

Re: Suitable UPS for TalkTalk wifi hub

Philile-TT — Fri, 05 Dec 2025 07:01:09 GMT

@KeithFrench please assist.

Re: Suitable UPS for TalkTalk wifi hub

KeithFrench — Fri, 05 Dec 2025 11:21:55 GMT

Hi @MickL @Philile-TT

I am sorry, but I can't recommend using what is essentially a non-standard power supply for your router; you are on your own with this.

Re: Suitable UPS for TalkTalk wifi hub

siphosethu-TT — Fri, 05 Dec 2025 11:26:12 GMT

Hi there @KeithFrench, thank you very much for the help.

Re: Suitable UPS for TalkTalk wifi hub

MickL — Fri, 05 Dec 2025 18:46:18 GMT

Hi Keith, no problem and thanks for your time. I'll probably buy an inexpensive spare router (I wanted a backup device anyway) and experiment with that.

Cheers,

Mick

Re: Suitable UPS for TalkTalk wifi hub

siphosethu-TT — Mon, 08 Dec 2025 07:03:29 GMT

Hi there @MickL, thank you for getting back to us. I'm sure @KeithFrench has seen the thread, you are most welcome. Bye for now, I'm sure you know where to find us should need help with anything. Thanks