Wife’s car has been having serially dead batteries. Replaced the battery after the first time (battery was almost 10 years old anyways so I didn’t mind putting a new one in). Next week her car died again so I meet her in the parking lot she pulled into with my jump cables and a multimeter. Started the car and then check the voltage and it was only showing 12.3v. I pushed the exciter plug into the alternator some more and all of the sudden it started charging. Finally got around to replacing it today and boy it was time.
Now getting 14.3v at the cigarette plug in the cabin.