A couple of bucks for peace of mind seems like a no brainer to me. But
then, I usually always seem to wait until they start chirping.
Just like AC filters. Each time, I say that "next time" I am not going to
wait so long, and then I do..............
Depends on how often you like to get up in the middle of the night to track down
that annoying once-a-minute "low battery" beep.
Yeah, sure, once a year is usually fine. Heck, spend some dinero on the
fancy-dancy lithium batteries, and then don't mess with them at all until the
10-year lifetime of the detector is up.
Only if someone didn't put in an alkaline battery but instead installed
a carbon-zinc or carbon-chloride type, which should never be used
because of the poor shelf life. For alkaline batteries, every 2 years
is adequate. Lithium batteries will last 10 years but should be used
only in smoke detectors designed for them because the low voltage
warning calibration is slightly different for them than for alkalines.
Just change them every year (not 6 months) , or if they chirp before that.
A good time to change them is when you set your clocks back or forward for
daylight savings time. (make it a routine)
Don't listen to these other cheap bastards. Your life and property are worth a
few dollars a year for fresh batteries.
No, it isn't. The smoke detector will tell you when it
needs new batteries. When it does tell you (annoying beep),
change the battery. Always use Duracell or equivalent
alkaline type battery. Not all detectors use the same
amount of electricity. Batteries in my detectors all last
longer than a year and some last over 2-1/2 years. Put a
piece of masking tape on the battery when you put it in the
detector and write the date on it. Then you will know how
long they last.
In fact the battery going out is what causes the unit to fail the test.
The unit test is primarily a battery test. As far as I know there
is no way to test the detector, except of course to build a fire under it.
Now you've got me confused. I think the test is more of a
circuit test than a battery test; its already got a built in
battery check--the chirp. I've never tried to test a unit
after the unit signals a low battery with chirps, but I bet
it will still test good. If a unit fails the test without
every chirping, I think something is wrong.
Sure you can test them and some manufactures give the
instructions for that particular unit. If you have a
barbecue, you can figure out how to test the smoke unit.
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