Silly question: What standard do you use to check the calibration of your
VOM? Beside the usual manufacturing tolerance it is likely subject to
getting knocked around. That doesn't help accuracy either.

Charlie

"Robert11" wrote in message
. ..
Hello:

Have been buying a bunch of those standard 9V batteries (a few different
brands) over the past few months, and have noticed that instead of 9V they
have been measuring out, with a VOM, at around 10.0 to 10.25. This is
under no load.

Anyone else notice this ?

Was wondering if this might be the cause of all the problems I've been
having with my fire alarms
giving 3 to 4 chirps, around once a day ?

It's probably the same type of chirp signal that the unit gives when the
batteries are low.

Thanks,
Bob