Smoke Alarms

[Jamjar74]

My smoke alarms have started bleeping intermittently.
when prodded for testing the alarm goes off. Does this mean they are not functioning properly or that the battery is low. If I remember correctly the battery cannot be replaced and the whole unit needs replacement. They have been in place approx. 6 years.

Any information much apprecicated.

Thank you.

[boxtops]

when ours bleep, it's because the battery needs replacing. We just take the back off, depends on which model you have.

[andy-hughes]

The battery is going, so replace the battery or the unit, which ever is required.

[ivor4781]

caution. it must be an alkaline battery for a smoke alarm

[The Builder]

You may well have a rechargeable lithium battery that has come to the end of its life. You may have to replace the whole thing.
What's the make and model?

[BRIGHT SPARK]

Is it an Aico?