Scangauge is good, but kind of outdated. A cheap bluetooth ELM327 scanner and the Torque app for Android devices will be able to show you all the voltages at once, not just 4. I don't have one, but I believe a mini VCI scanner with Techstream for PC will do the same.
If I hook up a digital multi-meter when the car is off, I get readings between 12.5 and 12.7, depending on temp, recent use and I'm not sure what all. I'm not sure if "acc mode" would be different, what it entails.
Actually you should measure the module voltages while the lights are on so that the battery is under load while you are doing the measurements. You've already determined that when the battery has no load, the battery module voltages are all good. Obviously this means the battery case has to be open during the testing.
Your question presupposes the need to disconnect the module wiring which implies you will find a bad module. I think that this is not necessarily the case. However, the answer is 48 in.-lb.
Thanks. I had already undone all the cells assuming I would find a dead one. Oh well lesson learned. At least I got to clean all the brass contacts.
