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F30 / F31 / F32 / F33 (2012 - current)
The sixth generation 3 series, chassis code F30. 2013 model year 328i and 335i sedans now in production. Read the F30 frequently asked question thread for all your basic question and dive into all the details in the ultimate F30 information thread.

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  #1  
Old 04-21-2012, 12:48 PM
curt9391 curt9391 is offline
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Battery Life While Storing My 335I

I normally hook a Battery Tender to my battery during storage but this may not be an option this time. Anyone have some idea as to whether my battery will last for 6-8 weeks with no Battery Tender hooked up? Thanks all.
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  #2  
Old 04-21-2012, 03:47 PM
emtrey emtrey is offline
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probaly would last in a warm weather climate
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  #3  
Old 04-21-2012, 04:31 PM
curt9391 curt9391 is offline
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335 Storage

Thanks for the input, no cold winters on the central coast of CA.
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  #4  
Old 04-22-2012, 05:23 AM
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Needsdecaf Needsdecaf is offline
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If it's anything like the F10, I'd go for the battery tender. There have been a lot of issues with batteries being run down.

Why is it not an option for you this time?
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  #5  
Old 04-22-2012, 06:38 AM
curt9391 curt9391 is offline
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335I Storage

Sold the house, the new one is not completed so the tender is not an option this time as there are no public storage sites with electrical outlets in the San Luis Obispo area that I can find. Probably best to disconnect the negative battery lead I suppose.
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  #6  
Old 04-22-2012, 06:50 AM
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Disconnecting the battery requires a dealer visit to register the battery when reconnecting.

Maybe you could start it after 4 weeks and top off the charge?
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  #7  
Old 04-22-2012, 06:55 AM
curt9391 curt9391 is offline
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335I Storage

Buggers, thanks for the heads up on the dealer visit need.
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  #8  
Old 04-23-2012, 09:55 AM
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Weaselboy Weaselboy is offline
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Quote:
Originally Posted by laser View Post
Disconnecting the battery requires a dealer visit to register the battery when reconnecting.

Maybe you could start it after 4 weeks and top off the charge?
A new battery requires registration, but where do you get that a simple disconnect would require registration?

OP>> You might look into one of those solar battery maintainer gadgets. Many people use them on motor homes in storage.

Last edited by Weaselboy; 04-23-2012 at 09:56 AM.
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Old 04-23-2012, 11:45 AM
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laser laser is offline
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Quote:
Originally Posted by Weaselboy View Post
A new battery requires registration, but where do you get that a simple disconnect would require registration?

OP>> You might look into one of those solar battery maintainer gadgets. Many people use them on motor homes in storage.
Haven't had any need to do this my self but a reading of the F10 forum talks of this being quite a different set up with a much more expensive AGM battery that is sensitive to losing charge and low voltage error codes if the car is driven less than 10 miles or so a day with the "regenerative braking" and efficient dynamics" complicating life.

Seems to me like getting a new battery would be similar to disconnecting and reconnecting the old one. I'd call my dealer before I disconnected the battery to be on the safe side.
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Last edited by laser; 04-23-2012 at 11:49 AM.
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  #10  
Old 04-24-2012, 06:02 AM
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tturedraider tturedraider is offline
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My car was unused for almost six months. I just disconnected the battery. When I re-connected it it fired right up. I did then go for a drive to give it some more juice.
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