Last time I purchased replacement batteries for the smoke detectors I got Energizer advance lithiums. One has given up after 4 years. I have not measured the remaining 5 to see where they are (yet), wondering if anyone has a recommendation for this application.
I think that I’d stick with the Energizer Lithiums. I have lots of smoke detectors and I need to get the Energizers. 4 years isn’t bad. My one detector is 15 feet above my floor and while I keep a 12’ wooden ladder in my condo, it’s a slight chore to get it out and set it up.
Once every 4 years would be fine.
Chris
Be aware that some smoke detectors caution against the use of 9V lithium batteries.
Yep, that’s an appropriate caution from CR:
What I want is a smoke detector that doesn’t start its low-voltage beeping in the middle of the night.
It generally happens then as the temperature is the coldest, so the battery voltage droops a bit and hits the threshold for the beeping.
As far as not using lithiums in smoke detectors, I have no problem with doing it, but I appreciate the caution.
This happened to me when I put Lithium AA on my door lock. It never gave me a low battery warning and I got locked out of my house. Thankfully I had a backup key
Same thing happened to me with the keypad lock to my shed/studio. Unfortunately I couldn’t remember what I did with the key and had to break in. The instructions said to use alkaline and not lithium but I didn’t listen.
Hank, they actually make those detectors that do not go off at 2 AM.
They were Carbon Monoxide and smoke though if I remember right. All I know is I just replaced (2) CO/Smoke detectors and the cells in 12 more smoke detectors. The ceilings are only 9 foot where I live now, they used to be over 25 feet high.
I replaced the cells with Energizer alkalines not lithiums.