Average battery life
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Postmaster
Joined: Jan 2005
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From: Saskatoon, SK
Average battery life
What years/miles have you guys had to change at? I have an 03 with 110000 miles and still original but I realize by posting this I may have jinxed myself! 
Posting Guru
Joined: Dec 2006
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From: Kansas City/Breckenridge
it all depends on where you live
here in the midwest I believe the average battery life is 36-48 months
call your local battery store and ask them.
also keep in mind that its possible one of your batteries is bad allready so your alternator is working overtime to keep the one battery charged and try to charge the dead battery which will burn out the 400-500 dollar alternator in no time.
here in the midwest I believe the average battery life is 36-48 months
call your local battery store and ask them.
also keep in mind that its possible one of your batteries is bad allready so your alternator is working overtime to keep the one battery charged and try to charge the dead battery which will burn out the 400-500 dollar alternator in no time.
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Joined: Feb 2005
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I have an '03 that had 121k miles a month ago when I replaced the original Motorcrafts with Interstates.
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Senior User
Joined: Apr 2005
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From: New Baltimore, Michigan
My 03 has 128,000 on it and I just changed the original Motorcraft batteries with Kirkland's from Costco.
Greg
Greg
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