Thanks, Antonio!  That's pretty near to what I was looking for.  I knew
someone out there had that...

Mike H.

PS- Is that posted on a website?  Could it be?  It's the sort of thing
that really should be...

>Mike,
>
>maybe this will help you!
>Attached a XLS with a very nice application for calculating/estimating
>battery life.
>
>Regards,
>Antonio Sergio Sena
>
>
>---------------------------------------
>Antonio Sergio Sena
>
>Primetec - Engenharia de Sistemas, Lda.
>e-mail: asena -at- primetec.pt
>WEB: www.primetec.pt
>---------------------------------------
>
>
>
>
>
>
>
>
>
> > I'm wondering if anyone has a source for a program which,
> > given a type of cell and a current load, can provide an
> > estimate of runtime down to a certain voltage.
> >
> > For example:  if I have a circuit which will consume 450 uA
> > until the input voltage drops to 2.7V, how long can that sit
> > until it reaches 2.7V (assuming two 1.5V AA alkaline cells)?
> >
> > Failing that, does anyone know where I can find equations
> > to solve?
> >
> > Mike H.
> >
> >
>
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>
><< batterylifecalc.xls >>

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