|
Those voltages sound pretty good to me for idle output.
with the car running it really only tells you that the alternator is functioning, and says nothing about the battery.
if it starts well cold with the battery you have in it, I see no reason for concern.
When I bought my car in 2017 it had a battery that was installed in 2005, just before the PO quit driving it. after completing all the mechanical, fuel and hydraulic work needed to bring it back on line, I charged that 2005 battery and continued to use it till I did a battery replacement in our Cayenne last year and swapped the old one from it into the 911. Never had a starting or running problem with either.
These old 911s seem to be pretty easy on batteries from my experience, unlike the Cayenne which seems to really want a really fresh full capacity battery.
|