Out of curiosity, check the ampere comsumption when it
is
idle and when it is used. Maybe some bad connection?

John

--- William Chops Westfield <westfw@mac.com> wrote:

> 
> On Jan 15, 2006, at 8:23 AM, Shay wrote:
> 
> > LED's shouldn't drain a 9 volt battery that
> quickly and the
> > buzzer is almost never on.  Really, only 1 or 2
> led's are lit at any
> > given time and they're really low volt led's.
> 
> A typical 9V battery has about 500mAH of energy, so
> if you're
> driving 20mA into LEDs, you can only expect a life
> of about 25 hours.
> LEDs are low current compared to incandescents, but
> they're not all
> that low power on an absolute scale...
> 
> BillW
> 
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