battery replacement for 2007 525i - BMW Forum - BimmerWerkz.com
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#1 (permalink) Old 09-09-2011, 09:35 PM
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battery replacement for 2007 525i

my battery needs constant re-charging, and it needs replacement. can anyone give me specifics as to how to go about this on my own ??

whoops, meant 525i in subject above

thanks

Last edited by lcompy; 09-09-2011 at 09:39 PM. Reason: mis spelled word
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#2 (permalink) Old 09-10-2011, 12:25 AM
OMFG another one!?
 
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Edited the subject. Most auto parts stores have charts with lists that can point out the right new battery.

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#3 (permalink) Old 09-10-2011, 12:41 PM
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There should be a 3 digit number on top of the battery... This denotes both the ampage and terminal layout, just quote it when enquiring about a replacement...


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#4 (permalink) Old 09-11-2011, 01:57 PM
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Replace Battery

Hi,
There are a lot of stories about replacement batteries, but I can only give you One good advice: buy an original BMW battery with EXACTLY THE SAME specifications as the original mounted battery.
Your cars computer is programmed with the battery parameters for charging current etcetera. After a battery replacement, the BMW dealer will do the registration procedure in the computer, but that makes it unnecessary expensive. Replacement and programming may match the battery costs.

A friendly BMW dealer who knows I am a good DIY mechanic told me that when the original battery is replaced with exactly the same one, it does not need registration/programming. The only thing then is that the computer has the 'old date' in its memory but will handle the battery as the original one.

The BMW battery will cost you about 25% more than the equivalent of the local carshop but it is worth it and it saves you the trouble of a mischarged battery, which may fail after 2 years.

Replacement you can do by yourself.
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#5 (permalink) Old 10-16-2011, 05:36 PM
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battery replacement

will no longer take a charge so need to replace mine too ('96 318is) but the bmw batteries from the local dealership are so much more than comparable ones from battery stores or auto parts. switch out is easy. wish i had a suggestion or advice but i/we just need to decide whether to spend that extra money for something i/we really might not need.
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