Talk of The Villages Florida - View Single Post - Finally done changing our clocks
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Old 11-06-2023, 01:32 PM
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Quote:
Originally Posted by retiredguy123 View Post
Typically, the batteries that come with your smoke detectors are alkaline batteries which have a 5 to 10 year shelf life. They are only used in smoke detectors for backup purposes when you have a power failure. They are rarely used at all. Also, when the battery becomes weak, the smoke detector will start to beep to alert you to replace the battery. So, in my opinion, routinely replacing the batteries every 6 months, as some recommend, is an outdated recommendation. If you want even longer lasting smoke detectors, you can replace the batteries with lithium batteries that are designed to last 10 years or longer.
Bingo.

I installed nine Energizer Ultimate Lithium (10 yr) batteries in 12/2016 and made a note in my Google calendar to replace them all in 12/2026. So far, only two have failed earlier than expected. One in 11/2021 and one in 10/2023.