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2010 2011 BMW 5 Series Forum F10 F10 Technical Topics Engine, Transmission, Exhaust, Drivetrain, ECU Software Modifications Battery tender connection: trunk or remote posts?
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      07-17-2013, 12:15 PM   #1
DriveWFO
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Battery tender connection: trunk or remote posts?

For those of you that are using a battery tender, did you connect the lead directly to the battery in the trunk or to the remote posts under the hood?
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      07-17-2013, 01:24 PM   #2
alextremo
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posts under the hood.
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      07-17-2013, 04:29 PM   #3
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Under the hood!
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      07-21-2013, 04:25 AM   #4
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Where is the negative post under the hood? Or are you just grounding it to the chassis. I couldnt see a spot where there wasnt any paint in order to place the negative terminal.
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      07-21-2013, 05:19 PM   #5
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Quote:
Originally Posted by Kccobfm View Post
Where is the negative post under the hood? Or are you just grounding it to the chassis. I couldnt see a spot where there wasnt any paint in order to place the negative terminal.
I just attached the negative lead to one of the strut tower bolts. Works fine.
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      07-21-2013, 08:59 PM   #6
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whats the purpose of a battery tender? Never heard of it before
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      07-21-2013, 09:58 PM   #7
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Quote:
Originally Posted by Akkord29 View Post
whats the purpose of a battery tender? Never heard of it before
A battery tender will maintain the charge of a battery that sits for extended periods of time. For example, my 550i only gets driven a few times a month and will stay garaged during the winter months.
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      07-22-2013, 12:54 AM   #8
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what about the BMW battery tender that they sell that uses the cigarette charger? Why not that one? Used it on my e92 M3 and it worked great.
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      07-22-2013, 09:46 AM   #9
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Quote:
Originally Posted by mdrobc13 View Post
what about the BMW battery tender that they sell that uses the cigarette charger? Why not that one? Used it on my e92 M3 and it worked great.
Why not that one? I already had a Battery Tender Jr. I also use it on our ATVs, lawn mowers, etc.
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