Why is it inevitable that smoke alarm batteries die in the middle of the night?

[dncdawg]

Happened at 3am for me.

[JC-DAWG83]

It is a design feature to make sure you are aware the battery needs to be changed.

[Jettdog]

We forgot to turn the heat on a few months ago one night. Woke up with 2 of my smoke alarms chirping. Batteries were fine. Once the house heated back up, they stopped.

[McDonoughDawg]

They make them now with 10 year batteries....

That said, the rule was replace when time changed in the spring...problem solved..

Like car tires and batteries, I get new ones before I get stranded.

[dncdawg]

They make them now with 10 year batteries....

That said, the rule was replace when time changed in the spring...problem solved..

Like car tires and batteries, I get new ones before I get stranded.

My wife even said something about changing them with the time change a couple of weeks ago.  We have a bunch, so it's a project.

You're actually supposed to change out the whole smoke detector every 10 years or something like that.  We have a set that is hard wired that came with the house and a second set connected to our alarm system, so that sounds like a big pain in the ass.