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8 Series - E31 (1989 - 1999)

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  #1  
Old 07-14-2011, 03:38 PM
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Costa Costa is offline
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Location: Vancouver, Canada
 
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Mein Auto: Supercharged E34 540i6
850i - Batteries

I just saw another 850 today and the owner said that the batteries die if you let it sit for about a week? Is this a common issue plaguing the 850i? Thanks
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  #2  
Old 07-14-2011, 06:56 PM
TxGr8White TxGr8White is offline
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Mein Auto: BMW 850Ci
Quote:
Originally Posted by cmellios16 View Post
I just saw another 850 today and the owner said that the batteries die if you let it sit for about a week? Is this a common issue plaguing the 850i? Thanks
No,
My batteries stay charged for quite a bit - the car sat for almost 6 weeks at one time and the batteries were just fine. Now, if you have crappy batteries (mismatched,old, worn out, won't hold a charge), then yes, they will NOT last more than a few days....
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Old 07-14-2011, 07:12 PM
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Costa Costa is offline
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Yeah that's what I'm guessing. Now, since were on the topic. How much money is it going to cost if I buy two brand new ones? And along with that, the owner says he has the BMW chip installed. What does that do? Is it like a performance chip?
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Old 07-15-2011, 06:58 PM
TxGr8White TxGr8White is offline
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Mein Auto: BMW 850Ci
Here are some choices:
AutoZone Duralast 49DL: Those should run you around $95-$110 each
INTERSTATE MTP-93: Those are a little bit more, but are a very good battery (depending where you go, figure around $135-$150 each)
BOSCH and SEARS make the same size battery at a higher price.
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