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Old 04-25-2011, 09:20 PM   #1
NERO
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Best battery for my whip?

I stored my car for the winter, and now my battery doesn't hold charge. Sometimes when I shut it off it wont restart.

I just went to the gym and my shit didn't start.


I bought my whip to be baller, and when my shit don't start @ the gym I look like a loser bros.


Whats the best brand battery ? Where can I get one other then dealer?

Thanks!

Last edited by NERO; 04-25-2011 at 09:21 PM. Reason: forgot info
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Old 04-25-2011, 09:30 PM   #2
V8specialist
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I think optima yellow tops are good. They aren't black and yellow, just yellow.
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Old 04-25-2011, 09:31 PM   #3
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Do you think the red top is good enough?
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Old 04-25-2011, 11:45 PM   #4
slemmer
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How old was the dead battery?
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Old 04-26-2011, 01:10 AM   #5
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From his sig--07 335.
4 years old. A little premature but expected.
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Old 04-28-2011, 08:28 PM   #6
BmW1819
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u can't just slap in a battery in e90's cause the alternator will over charge the battery and kill it faster once u replace a battery u gotta register it in the dme
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Old 04-28-2011, 09:39 PM   #7
V8specialist
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Quote:
Originally Posted by BmW1819 View Post
u can't just slap in a battery in e90's cause the alternator will over charge the battery and kill it faster once u replace a battery u gotta register it in the dme
Don't new batteries come charged already?
How do you register a battery with the DME? never heard of that before...
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Old 05-09-2011, 10:20 PM   #8
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yea well that's the problem the new cars come with a intelligent battery system where the battery ages the dme send a signal to charge the battery more so if u don't register it it will over charge your new battery yea new battery should be charge. u can go to any shop that services bmw's they may charge u
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Old 05-09-2011, 10:30 PM   #9
V8specialist
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Quote:
Originally Posted by BmW1819 View Post
yea well that's the problem the new cars come with a intelligent battery system where the battery ages the dme send a signal to charge the battery more so if u don't register it it will over charge your new battery yea new battery should be charge. u can go to any shop that services bmw's they may charge u
I'm not what bmws you are referring to, but the ones on this planet have no such system.
How does the DME control voltage reguLation on an alternator????

There is no way any car can tell if you changed a battery. Period.
Perhaps confirming the new batterY is FULLY CHARGED before installing would prevent from frying your alternator.
The alternator doesn't CHARGE the battery voltage... It MAINTAINS it. Big difference...

If anyone can provide me BMW documentation or a procedure for registering a battery I'll shut my mouth. Lol
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Old 05-15-2011, 09:25 PM   #10
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Thanks guys, I change my battery with a optima. Its starts great now!
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