I thought that the typical capacity for a 9V battery was in the
    neighborhood of 150 mA-H?

It looks to me like top NiMH rechargable 9V batteries are about 150mAH.
Alkalines should be quite a bit better than that...


    I am running a test on a ciccuit that consumes around 3 mA 99% of
    the time, and so far I it has been running for almost 4 days
    (almost 300 mA-h).  I am using a new Energizer 9V battery.  Does
    anyone know any real specs on an Energizer?

I looked at spec for Duracell (at duracell.com) and panasonic (at digikey)
and it looks to me like 9V alkalines get close to 500mAH at low discharge
rates..

BillW

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