Dynamic-load circuit determines a battery’s internal resistance

https://www.electronics-lab.com/dynamic-load-circuit-determines-a-batterys-internal-resistance/

by Jim Williams @ end.com The simplest model of a battery comprises an ideal voltage source that connects in series with a resistance whose value—often a few milliohms—depends on the battery’s electrochemical condition and construction. If you attempt to use an ordinary ac milliohmmeter containing a kilohertz-range ac excitation source to measure a battery’s internal […]