I tested terminal voltage per your suggestion, readout on my miltimeter showed 12.62 volts after running the headlights for two minutes. I started the car with the multimeter attached, and got a low voltage indication of 10.71 volts. Car starts without hesitation, there are none of the usual indications of a weak battery, from my experiences with older cars (slow cranking, dim headlights or interior lights, battery lights on the dash.)

I appreciate your guidance, and I thank you for teaching me a few things about testing automotive batteries.

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2007 BMW X5 4.8i - Sport Package, Wife's Car

2001 BMW 325i - My Car.

2005 Ford Excursion Limited 4x4, 6.0 Powerstroke Diesel. My first "grown up" car.