Thanks for the detailed response Loren!

12.8 is fully charged. As to the charger: 14.1 is a charging voltage, up to 15+ whereas once the battery is charged it goes into a "maintenance" mode, a trickle charge so to speak, that keeps the battery somewhere around 13.2 to 13.8. Your battery will not "rest" at that higher voltage for long.  So, it sounds like your battery is being fully charged from the ALT, and your charger is also working correctly. This stuff is fresh in my brain as I just bought a battery minder charger and was reading the manual a few days ago.

Lots of good stuff Loren, thanks again!

Troy

<<Yes and no.  It charges from the alternator but not all the way, is usually
at about 12.85 volts even after a long run on the highway.  But if plugged
into 110v AC the Progressive Dynamics 30 amp charger (with Charge Wizard)
kicks it right up to 14.4 v, then tapers off to about 13.8 and holds steady
there.  I have a digital volt meter permanently  wired in with a switch so I
can see the aux and starting battery any time I want to check.
I'll probably add a 12v to 12v converter/charger like Mike Elliot did so
that the aux is fully charged when driving.>>