Hello Folks. Thanks for stopping by and helping me with this issue.

History: Alternator is Stock (51k on it). Battery is a Optima Yellow Top (Few Years Old)

After a few days, battery is dead!

I Disconnected the negative terminal, and put a test light between the terminal, and negative battery cable. No light, indicating no drain.

Checked the battery with a digital multimeter. Read 12.40 volts. Connected the battery and started the car. Rechecked the battery voltage with car running. Read 13.88 volts, indicating the alternator is charging the battery.

What should I check next folks. Thank You!

 

Replace the alternator and buy a good battery. Reason the alternator could be on its last legs and any battery over 3yrs old is suspect.

 

I'd bring the battery in for a free load test just to eliminate it as the problem.