Thread: M3 battery
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      12-15-2012, 12:03 PM   #7
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Drives: Harrop M3 / F10 M5 / F82 M4
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2000 BMW M5  [0.00]
1990 BMW 735i Turbo  [0.00]
2008 BMW M3  [7.50]
2015 BMW M3  [0.00]
2015 BMW M5  [0.00]
Quote:
Originally Posted by j2m
AT least make sure your doors are locked. I've left mine for a couple weeks, with the doors locked and it'd fine but if I leave the doors unlocked the battery dies in about 6-7 days.
I always make sure to put my battery tender on now... It will save your battery and keep it fully charged and takes about 30 sec's to hook up
Having the doors unlocked should not cause additional drain.

OP: You're fine leaving it for 15 days.
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