[jmatta]

Battery is four years old, factory Moll. I'll likely replace it when I do the voltage regulator and it won't be another overpriced OEM unit. The maintainer will switch on when the voltage drops to a predetermined level and bring the battery up to full power. Porsche doesn't sell the voltage regulator separately, but a little research shows the same unit is used by VW, Audi and MB in their Bosch units. More of a PITA to R&R the alternator, than to actually swap the regulator.