99 Acura TL - 2 batteries in 2.5 yrs

Tiny
AMRATLAL
  • MEMBER
  • 1999 ALL OTHER MAKES ALL OTHER MODELS
My vehicle has gone through 2 batteries in the past 2.5 yrs. Took the car to the dealership and they tested the alternator and checked for a drain on the battery but found nothing.

Also checked with retailer I purchased battery from and confirmed correct battery for vehicle.

Anything else I can check?
Saturday, April 21st, 2007 AT 7:11 PM

2 Replies

Tiny
BRUCE HUNT
  • MECHANIC
  • 3,754 POSTS
It is possible that the alternator is still bad. I say this because it is possible that the test showed that the alternator was charging. What they may not have tested or waited for was the ability of the voltage regulator to stop charging the battery. An over charged battery will fail pretty quickly as well.
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Monday, April 23rd, 2007 AT 3:46 PM
Tiny
LOSTINMARS
  • MECHANIC
  • 222 POSTS
Was the alternator tested to see if its leaking any ac voltage into the system? If its a denso alternator, which iirc it is, then there's a good chance this is happening. This will fry a battery over time.
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Friday, April 27th, 2007 AT 7:58 PM

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