Batteries for smoke alarms
What batteries are folks using for smoke alarms?
I have been using the Lithium 10 year batteries and I only get 2 to 3 years before the low battery alert goes off. The alarms had Duracell Ultra batteries from new, but those are no longer available. The lithium batteries are over $6 each and I don't think they last three times longer than alkalines. I have had to replace three batteries in the past 60 days.
The interesting thing is that my smoke alarms are all AC powered with battery backup. I don't understand how I am burning through batteries since I am not losing power. These are smoke/CO detectors with voice alerts.
The low battery alert is very annoying as they beep and then a voice says "Low Battery".
I just had a similar problem
We have AC smoke detectors with 9v battery backup. We were getting a "cheep" once a minute or so (no voice). I took the battery out and replaced it with a 9 v rechargeable from Jason Abel. I wanted to see how they hold up re self-discharge. It's only been about a month so I can't tell much yet. I checked the battery I removed with a digital vom and it was reading 10+ volts so I don't know why it was "cheeping", just that changing the battery shut it up.
Curt