Quote:
Originally Posted by retiredguy123
One way to save a little money is to stop following the outdated advice to replace your smoke detector batteries when the time changes. Even if you have alkaline batteries, they should last at least 5 years, not 6 months. Lithium batteries will last even longer.
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Absolutely correct.
I change all of mine after a year, tested them all with my multimeter, and they all registered at full strength. Another myth busted!