On Fri, 21 May 2004 10:32:00 -0400, "Jeff Morris"
wrote:

You mentioned you have Rolls Batteries. Here's their service bulletin, where
they say "Determining state of charge by voltage is more difficult as there must
be no load or surface voltage present", but they indicate 100% charged is at
12.6 Volts:

http://www.rollsbattery.com/Bulletins/600.htm

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The Rolls web site information is right on the money in my experience.

If memory is correct, Rolls was founded by John Surette who has long
been regarded as a leading battery engineer.