piclist 2008\07\05\125514a >
Thread: Battery Capacity
face picon face BY : email (remove spam text)(Olin Lathrop)

Tomás Ó hÉilidhe wrote:
>> Think about it.  If a perfect battery with 0 internal resistance was
>> rated for 1AH and you put 10ohms in series with it, how many AH can
>> the battery and resistor deliver to the load?
> Depends on the resistance/impedance of the load.

No, it doesn't.  That was the point of the mental exercise.  You were
supposed to realize that the internal resistance of the battery has no
bearing at all on the amp-hours it can deliver.

> But if I have my
> device and I know it has an "average resistance" of 100 ohms, then I
> can do the maths to work it out.

OK, go ahead.

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See also: www.piclist.com/techref/power/batterys.htm?key=battery
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