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Anonymous Posted on Dec 18, 2010
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My alternator is good & my battery still gets drained

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Duane Wong

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  • Cadillac Master 6,826 Answers
  • Posted on Dec 18, 2010
Duane Wong
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How old is the battery? I learned at Sears while working there in the battery department that the average life of car batteries is about 3 years. So, after that, batteries lose a significant amount of their performance CCA or cold cranking amps, and may have to be replaced on a pro rated basis after that period of time, on average.


I put a diehard platinum battery into my 1997 Cadillac Deville Limousine for about $189.99 plus tax and it has a 4 year replacement warranty due to bettery construction.

However, if you get Walmart's best Maxx battery, they have a 3 year replacement policy and they charge about $79.99. I put that into my 1990 Cadillac Deville.

Good luck on resolving the battery drain problem with a good alternator.

  • Anonymous Dec 18, 2010

    battery only a year old had it charge at autozone tested at 93% and car wont

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