ScottyUK, your info helped and the sites helped understand what I should be tying out. skogsqurra, I'll give your suggestion about measuring internal resistance with different resistors. You totally lost me when you started to talk about the impedance. I have no idea what any of that stuff is.
I'm a newbie at circuits and I'm still learning. I was wondering how I can effectively test the internal resistance of several different AAA batteries? Can someone explain to me exactly what internal resistance of a battery is? I've looked on the forum for other posts but didn't really find...