After sitting for more than 2 days, my battery is completely dead in my 1998 Ram 5.2 5-speed. New battery in January of 20. Had a diagnostic performed at place of purchase and I was told alternator and battery were fine. Anyone have an idea?

 

Battery Drain

 

If you don't find anything obvious, have a look at the seat belt module under the center seat.

 

15.4V at the alternator with the com wire from the meter touching the battery ground . And 15volts dead on at both batteries so I'm like 2 volts 2 high If 13.3 is ideal. What are yall thinking??

Thanks again yall

 

I think 14.7 is considered 'ideal'..... Anything over that is considered 'bad' for the battery....

 

Well, what do u think is possibly causing this overcharging?BAd regulators,, inside the alternator?

Thanks again gentlemen

 

The regulator is unfortunately part of the PCM. There is no regulator inside of the alternators of 2nd gen trucks.