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  • 12-05-2009, 03:32 PM

    Re: Aftermarket Replacement for OEM battery

    That should be the big one at 15 + inches at it longest, 850 CCA. OEM for BMW batteries is Exide. Group 49 (may come in at only 14 inches, but still a brute). Do not let normal autoparts houses give you a replacement as they nearly all are too small. You need NAPA or other parts place that can get true OEM replacements.

    Personally, I purchased a BMW OEM battery for retail of $220 minus 20% BMWCCA discount just so I would not have any future hassels if ever any electrical issues popped up. Plug and go.

    US '05 645 Coupe|Silver Grey|Chateau|Sport|Logic 7|HUD|Cold Pkg|SAT|AUX|BT w/ snap-in adapter|MP3|V1|CIP 31.00.00
  • 11-25-2009, 09:37 PM

    Aftermarket Replacement for OEM battery

    Can anyone tell me what aftermarket battery will work on the 04 645ci without having to go for resetting of the computer? I read that one with the same specs should work fine (?) but I'm not sure what people are using or if this is really feasible. Thanks.

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