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7 Series - F01 / F02 (2009 - current)
The new re-designed 7 series F01 / F02 leads off the BMW Fxx chassis code!

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  #1  
Old 07-05-2012, 04:29 PM
biomike biomike is offline
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Battery maintainer on 2010 750LI - Where do I connect?!?!

Sorry for the naive question, but can someone tell me where I connect the hot and cold? I am not finding the usual battery terminals to be easily accessible. :-)

Much appreciated!

Michael
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  #2  
Old 07-05-2012, 07:51 PM
chrischeung chrischeung is offline
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Under the hood. Check the manual - don't just guess. I almost connected the ground incorrectly.
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  #3  
Old 07-06-2012, 03:17 AM
BaranE BaranE is offline
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You can always plug it directly to the battery in the trunk.
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  #4  
Old 07-06-2012, 06:32 AM
6spdg37s 6spdg37s is offline
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my z06 has battery in the trunk and the quick jump under the hood.. connected it to the positive where you would jump from under the hood and then found a nice clean paintless ground
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  #5  
Old 07-06-2012, 07:56 AM
chrischeung chrischeung is offline
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Quote:
Originally Posted by 6spdg37s View Post
nice clean paintless ground
The ground in the 7 series is painted - the same coating as the rest of the engine bay. So that's why it's not very easy to find without knowing where it is. And then it makes sense once you know.
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  #6  
Old 07-06-2012, 02:28 PM
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Individual750LI Individual750LI is offline
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So when using the battery tender, we should connect it under the hood, not in the trunk? It would make sense though, since one don't want to have the trunk open while he is gone for a month.
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  #7  
Old 07-06-2012, 04:31 PM
gassy gassy is offline
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Originally Posted by Individual750LI View Post
So when using the battery tender, we should connect it under the hood, not in the trunk? It would make sense though, since one don't want to have the trunk open while he is gone for a month.
Either location will suffice. The flat electrical cord will compress under the trunk lid and not prevent it from completely closing with most battery tenders, or you can run it under the hood and it too will close without a hitch.
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  #8  
Old 07-07-2012, 07:22 AM
BaranE BaranE is offline
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You can also just disconnect the positive terminal.
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  #9  
Old 10-13-2012, 06:29 PM
f01driver f01driver is offline
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So just purchased a BMW charger because I won't be driving my car during the winter, actually hooked up today and it's fully automated so I don't have to worry about disconnecting it. It's one purchase you should make if you plan to keep your car parked during the winter.
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  #10  
Old 10-15-2012, 01:43 PM
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Individual750LI Individual750LI is offline
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Do I really need it if I will be on vacation for 11 days?
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  #11  
Old 10-15-2012, 01:52 PM
chrischeung chrischeung is offline
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You should be fine as long as your battery is charged up prior to you leaving. ie. Make sure your preceding week included a relatively long drive, say 30 min. You can always get a jump from BMW Assist.
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Last edited by chrischeung; 10-15-2012 at 01:55 PM.
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  #12  
Old 10-15-2012, 01:57 PM
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Individual750LI Individual750LI is offline
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Thanks Chris, yeah, I plan to do a long drive with minimum electrical usage (no stereo, headlight off, no AC ) before I leave.
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  #13  
Old 10-15-2012, 10:11 PM
king0fspades king0fspades is offline
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Quote:
Originally Posted by gassy View Post
Either location will suffice. The flat electrical cord will compress under the trunk lid and not prevent it from completely closing with most battery tenders, or you can run it under the hood and it too will close without a hitch.
You are not supposed to close the hood while charging.
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  #14  
Old 10-16-2012, 12:02 AM
f01driver f01driver is offline
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Quote:
Originally Posted by king0fspades View Post
You are not supposed to close the hood while charging.
+1.

Never close your hood, don't use a power cord and keep the charger as far away from the leads.
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  #15  
Old 10-16-2012, 08:19 AM
chrischeung chrischeung is offline
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For those in the market, the one I have is on sale today at Sears - http://www.sears.com/shc/s/p_10153_1...0x000545&aff=Y

Good security for $23.99.
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  #16  
Old 10-16-2012, 12:26 PM
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Individual750LI Individual750LI is offline
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Wow, pretty cheap, I should go grab one just in case. Thanks again Chris!
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  #17  
Old 10-16-2012, 01:05 PM
f01driver f01driver is offline
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It's a good investment especially for folks that will keep their cars parked for an extended period of time.

Sent from my SGH-I747M using Bimmer App
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  #18  
Old 10-16-2012, 01:29 PM
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csmeance csmeance is offline
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Quote:
Originally Posted by BaranE View Post
You can always plug it directly to the battery in the trunk.
Quote:
Originally Posted by Individual750LI View Post
So when using the battery tender, we should connect it under the hood, not in the trunk? It would make sense though, since one don't want to have the trunk open while he is gone for a month.
Quote:
Originally Posted by gassy View Post
Either location will suffice. The flat electrical cord will compress under the trunk lid and not prevent it from completely closing with most battery tenders, or you can run it under the hood and it too will close without a hitch.
Quote:
Originally Posted by BaranE View Post
You can also just disconnect the positive terminal.
NEVER hood up the charger DIRECTLY to the battery otherwise you can risk screwing up the electronics that control the battery! The underhood terminal is connected to a power management module that monitors the battery voltage and will allow it to charge properly.
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