Trunk Battery

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Old 01 May 2012, 04:20 pm   #1 (permalink)
EARTHLINK EAST
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Default Trunk Battery

What are the life expectancies of the battery in the trunk? Everything is
fine but my previous experience with normal car batteries is you're lucky to
get a 6th winter out of one. I have a April 2006 Prius. Is this battery
unique? It's already exceeded my past experience.

Ed

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Old 01 May 2012, 08:33 pm   #2 (permalink)
walt m
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Default Re: Trunk Battery

On 5/1/2012 4:20 PM, EARTHLINK EAST wrote:
> What are the life expectancies of the battery in the trunk? Everything
> is fine but my previous experience with normal car batteries is you're
> lucky to get a 6th winter out of one. I have a April 2006 Prius. Is this
> battery unique? It's already exceeded my past experience.
>
> Ed

It is unique in that its sole purposes are to run the SKS system when
the car is 'off' and to boot the ECUs and bring the hybrid battery
online when you press the 'Power' button. It doesn't run the starter
like in conventional cars so it's not as heavily taxed, even in winter.

That being said it does eventually lose capacity with the result that
the hybrid system has to continually try to charge it, and that causes a
significant loss of fuel economy due to the ICE running more than usual.
There are threads describing this symptom on priuschat.com in the
forums, search for something like 'check 12v battery'.
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Old 02 May 2012, 02:52 am   #3 (permalink)
bwilson4web
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Default Re: Trunk Battery

On May 1, 3:20*pm, "EARTHLINK EAST" <ca...@ed-camin.com> wrote:
> What are the life expectancies of the battery in the trunk? *Everythingis
> fine but my previous experience with normal car batteries is you're luckyto
> get a 6th winter out of one. *I have a *April 2006 Prius. *Is this battery
> unique? *It's already exceeded my past experience.


Our 2003 Prius battery lasted to January 2009 . . . six years. But
folks have gotten more and some less. I don't know that anyone has a
hard number on how long they last.

Our replacement battery may be showing some initial issues so I'm
thinking about getting a solar, battery tender. But there are several
approaches and I haven't settle on plug-in vs solar, yet.

Bob Wilson
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