Can I directly measure resistence/impedence of a battery?

[bbb74]

I just scored a hand me down fluke 179 multimeter. It has a resistance mode. I know I can calculate impedance using 2 voltage readings and a resistor and a formula etc, however was wondering if I can measure it directly on the multimeter.

I'm a bit cautious though because I'm wondering if trying to measure it in this mode would basically be a shortcircuit of the battery, or that the multimeter would not be expecting 4v in the resistance mode.

Thanks!

 

[HKJ]

No, you cannot. The DMM can only measure resistance when there is zero voltage.
Trying to measure ohms when there is voltage will not damage a Fluke meter (Or any quality meter) or the battery.

 

[bbb74]

Thanks!

 

[n3eg]

I have a way of comparing battery impedance that I used to call "the impedometer". I would connect a current limited power supply to a battery and hit it with about 20C charge rate just long enough to see the voltage reading on the terminals. The voltage would follow the impedance - higher and lower.

This was in the NiCad days before there were any single cell cheap analyzers available.