[SI-LIST] Re: Theoretical Battery Life

Mike,
Battery data sheets are easy to find online, for example:
http://www.duracell.com/oem/Primary/Alkaline/mx1300.asp

Your answer is a day or two at room temperature,=20
depending mainly on the minimum voltage you can tolerate.
Battery V drops continuously under steady load.
If you stop at 1.1 volts/cell, which would be appropriate
for a NiCd, you are leaving a significant fraction of the=20
available energy in the alkaline battery.

Rich
-----Original Message-----
From: Mike Neaves [mailto:michael.neaves@xxxxxxxxxxx]
Sent: Wednesday, November 20, 2002 7:59 PM
To: si-list
Subject: [SI-LIST] Theoretical Battery Life



Hi Everybody!

    I have a question that I would like answered....

    This question doesn't have much to do with SI, but, with the
    "plethora" of electrical knowledge available in this forum, I expect

    that someone may know the answer I am searching for...

The question is:

    How long can I expect '2' alkaline D cell batteries connected in
series
    to provide a relatively constant current of 0.3 Amps?

    i.e. 3 volts / 10ohms =3D 0.28 to 0.30 Amps

Thanks,

Mike
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