Measuring cell voltage - under load?

[Russel]

That helps of course. But what I am talking about is to have four test leads. Two leads connect to the battery to source or sink the current, and the other two leads connect separately to the battery to measure the voltage. Since the voltage sense leads do not carry any current their resistance is unimportant and you always get the true voltage at the battery terminals.

Using separate leads for load and voltage measurement would be more accurate. I was trying out some of the new features that the "Pro" version of the CBA software provides.

Russ