What could be draining the battery if the alternator is good?

Tiny
SHAWNRA
  • MEMBER
  • 2006 PONTIAC GRAND PRIX
  • 6 CYL
  • AUTOMATIC
  • 148,000 MILES
Has a new battery, has a new alternator.
This has been an ongoing issue for about a year. I don't drive the car but I start it and let it run so I can keep the fluids running and everything working. It seems that the battery wouldnt hold a charge, I would see the charging system failure on the dasboard. The battery was under a 3 year warranty, replaced that thinking that was the problem. Everything went good for a bit then went to start it and again not starting battery dead. Jumped it, took a good 15 minutes to get it to start. So it started and ran for a few times then wouldnt start again. Then I replaced the alternator. Started right away and did this a few times and now back to not starting again. It will start on a jump. A few days go by and it wont start again. What else is draining my battery if the alternator is good?
Wednesday, January 1st, 2025 AT 11:54 AM

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