topic Re: First Alert Sc5 battery in Nest Protect

First Alert Sc5 battery

Thops — Sat, 08 Nov 2025 19:27:19 GMT

Hi all

My nest protects are expiring shortly and I’d like to replace them with battery first alert sc5. I’ve had a look online but can’t see a UK supplier and I can’t order directly from US website.
Can anyone help pls?

Re: First Alert Sc5 battery

David_K — Sat, 08 Nov 2025 19:38:04 GMT

Hi @Thops

There is no equivalent recommended by Google for the UK unfortunately. First Alert is only available in the US and Canada.

Upcoming changes to our device portfolio - featuri… - Google Nest Community

Re: First Alert Sc5 battery

Thops — Sat, 08 Nov 2025 21:49:44 GMT

Thanks David. I’ve seen sc5 on UK Amazon, although the battery version is not currently available. Would you know if the battery option is compatible in the UK if I can source from Amazon?

Re: First Alert Sc5 battery

David_K — Sat, 08 Nov 2025 22:24:50 GMT

That's outside my area of expertise I'm afraid. You would be better served to contact their support team instead: Support | First Alert

Given it's not officially sold or supported in the UK it wouldn't be my first choice for a safety critical device (I'm also located in the UK).

Re: First Alert Sc5 battery

cervezaman — Sun, 09 Nov 2025 11:36:11 GMT

I'm in the UK and bought one from Amazon UK. Unfortunately you need to connect it to the First Alert app (before then linking to Google Home) which is not available in the UK.....

Re: First Alert Sc5 battery

Thops — Sun, 09 Nov 2025 13:22:23 GMT

Thanks! Saved me the hassle of having to return them

Re: First Alert Sc5 battery

Thops — Sun, 09 Nov 2025 13:24:35 GMT

I was planning to use existing mounting plates from Nest for SC5 but all in all it seems like this is a non starter. Back to looking for alternatives!

Re: First Alert Sc5 battery

cervezaman — Sun, 09 Nov 2025 13:48:56 GMT

No problem!