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Battery life on '03 Prius?

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Old 10-19-2007, 12:02 PM   #1
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My wife drives an '03 Prius. It is nearly five years old now, with only 37,000 miles on it. My question is: how long does the battery usually last (the regular battery, not the big power one up front)? Should I go ahead and replace it now, or wait til it plays out?
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Old 10-19-2007, 06:21 PM   #2
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<div class='quotetop'>QUOTE(gene4655 @ Oct 19 2007, 11:02 AM) [snapback]527764[/snapback]</div>
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My wife drives an '03 Prius. It is nearly five years old now, with only 37,000 miles on it. My question is: how long does the battery usually last (the regular battery, not the big power one up front)? Should I go ahead and replace it now, or wait til it plays out?
[/b]
You are way past due- I would head down to your local discount club and have it replaced before you guys get stranded someplace. That's my .02...

Brent
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Old 10-19-2007, 07:36 PM   #3
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I think of five years as being a reasonable life expectancy for a 12 volt lead-acid car battery. It will be going dowhill from here.
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Old 10-22-2007, 04:31 PM   #4
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It seems to me that five years is about normal in a conventional car, but the 12v battery in a Prius doesn't do any of the engine cranking that it would in a conventional car. Running relays and computers shouldn't be nearly as taxing. I'd have it checked. You may get significantly more life out of it.

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