[quote=Arney]Perhaps the 6-month rule came about at a time when batteries were less reliable, and 6-month replacements made more sense? I've never seen a leaking 9V, and with the availability of lithium 9V cells now, you could go many years without changing those puppies.
I've always wondered how necessary the 6-month replacement rule is.
I suspect that part of the point is to get people into the habit of keeping that vital piece of equipment working. Too many people either forget about them, and many don't even have alarms. A dead battery is as bad as not having an alarm at all.
Does any know how much power the alarm going off drains? A few kitchen issues, humidity from the shower, grumpy toaster..... How long is the battery life if the unit is doing more than just waiting?
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