Internal resistance of batteries

[Norm Dresner]

In "The Art of Electronics" [Horowitz & Hill, 2nd Ed, p9], they state
"For example, a standard 9 volt alkaline battery behaves like a perfect
9 volt voltage source in series with a 3 ohm resistor ..."

Where can I find information on the internal resistance of other battery
types and voltages?

TIA
Norm

 

[Watson A.Name - \"Watt Su]

"Norm Dresner" <ndrez@att.net> wrote in message
newsku2d.599944$Gx4.438305@bgtnsc04-news.ops.worldnet.att.net...

, they state
"For example, a standard 9 volt alkaline battery behaves like a
perfect
9 volt voltage source in series with a 3 ohm resistor ..."

Where can I find information on the internal resistance of other
battery
types and voltages?

It depends on the state of discharge of the cell. Any info you get
would be for the average of many cells, and your particular cell could
vary widely from that average. ALkalines are much lower than
zinc-carbon. You can calculate the value for a cell by doing this:
http://www.buchmann.ca/Chap9-page2.asp

TIA
Norm

 

[Ross Herbert]

On Fri, 17 Sep 2004 05:09:41 GMT, "Norm Dresner" <ndrez@att.net>
wrote:

|In "The Art of Electronics" [Horowitz & Hill, 2nd Ed, p9], they state
| "For example, a standard 9 volt alkaline battery behaves like a perfect
|9 volt voltage source in series with a 3 ohm resistor ..."
|
|Where can I find information on the internal resistance of other battery
|types and voltages?
|
| TIA
| Norm

Some good info here http://www.buchmann.ca/

Haven't read it myself so can't comment on whether it has everything
you want to know.

Cadex http://www.cadex.com/default.asp are currently field trialling
their new hand-held battery analyser (CA-12) which reputedly gives an
asessment of Cold Cranking Amps CCA and Reserve Capacity (RC) for
automotive and other industrial batteries.

 

[Ross Herbert]

This article might be relevant
http://www.buchmann.ca/article25-page1.asp