99 Acura TL - 2 batteries in 2.5 yrs

1999 ALL OTHER MAKES ALL OTHER MODELS
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AMRATLAL
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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?
Apr 21, 2007 at 7:11 PM
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BRUCE HUNT
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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.
Apr 23, 2007 at 3:46 PM
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LOSTINMARS
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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.
Apr 27, 2007 at 7:58 PM