Help! My smoke alarm is beeping on and off

[BloodyHellKenn]

Due to a low battery and can’t figure out how to get to the battery compartment! I’ve tried twisting it off but it says to disconnect the AC mains and that the battery is not replaceable? Worried it’s going to keep going off in the night now as I have an ASD child who would be very distressed at the noise. Help!

if you take a photo I expect someone can help?

I will, thanks ☺️

Mine is a mains wired one and you need to stick a knife in near the top. And it sort of pushes something.

Mine slides sideways.
Took me bloody ages to figure out 😕

Also have you pressed the reset button?

Hopefully this works!

Put a screwdriver in the small rectangular hole between the base and the unit and ease it off gently.

Is it a Aico Ei3016 Mains Interlinked Optical Smoke Alarm?

I’m not sure 🤔

I have these ones in my new build house. They're hardwired in and not battery operated. No idea how to get them off though unfortunately

It says to disconnect the AC mains before removal? And that the battery is not replaceable

Have your electrics tripped? Maybe check the fuse box and/or reset the mains?

Ahh ok. Mine is a new build too. I don’t want to risk yanking it off!

It is a - ei a17911 smoke alarm

You are only removing part of it. You will need an electrician to change it.

Have a look at the fuse box, it should be labelled. But don’t turn them off without having some others at backup.

Some of them you need to replace the whole unit you can't change batteries.

Mine was like yours OP.
It was hard wired but beeping.
lasted 26 years but had to be replaced last year.
Had to get an electrician in to do it.
Safety is priceless. Get it done.

Has it expired?

Smack it with a broom is what I usually do 😂

It says expiry November 2025

That’s what I did 🤣 It did stop to be fair 🤣

You will need an electrician to replace the head unit. It’s likely they have all expired so would be worth doing them all at the same time.

The mains ones have a back up battery, sounds like the battery has expired. There should be a button to press to stop it beeping until you can replace the whole unit. If you get the same type it should have the same connectors that clip into each other, just isolate the smoke alarm switch at your fusebox /circuit board when you change them.

When one of ours went off (and why the hell is it always in the middle of the night) we managed to shut it up, then vacuumed it. It's been fine since.