General question - appropriate unloaded battery voltage

[Brett Dikeman]

On Oct 28, 2006, at 11:37 AM, LL - NY wrote:

> Just assessing whether or not my UrS's battery is up to snuff. It's  
> reading
> 12.65 on my Fluke digital.

There are many factors- temperature, how long the battery has been  
sitting since it was last charged, whether it has been under any  
drain (ie various memories and clock), etc.

I think this section of the Lead Acid Battery FAQ is exactly what you  
are looking for:

http://www.uuhome.de/william.darden/carfaq4.htm

If I read correctly, he recommends checking over the battery  
(including testing specific gravity of the cells), charging it  
properly, removing the surface charge (ie waiting 12-24 hours) and  
then taking it to an auto parts store for a battery conductance test.

Brett