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F10 / F11 (2011 - Current)
The new chapter in the highly successful story of the BMW 5 Series Sedan (F10) and wagon (F11)

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  #1  
Old 02-03-2013, 07:08 AM
Sharbotcom Sharbotcom is offline
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Mein Auto: F10 535xi MSport
Hooking up Battery Tender

Guys:

I've finally gotten a Battery Tender and topped up my battery charge (I was having a few low battery warnings). All seems good now since I did the overnight charge. I used the two battery posts under the hood and attched the charger using the allegator clips. My question is I want to attach the eye rings and leave the cable easily accessible through the grill so I can simply connect the battery tender and plug it in without having lift my hood etc. (I plan on plugging it in overnight once a month or as needed during the winter season). My question is which locations are the best to attach the eye ring connectors? Anyone done this or do you guys just use the allegator clips?

Thanks,
Bill

P.S. a picture of the locations would be really helpful
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  #2  
Old 02-03-2013, 07:35 AM
alextremo alextremo is offline
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Alligator clips. I do mine about once per month as well and it's not that time consuming to open the hood and hook it up.
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  #3  
Old 02-03-2013, 12:13 PM
Quacker Quacker is offline
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Mein Auto: 2012 535i xDrive
I did what you want to do. I used ring terminals right on the battery post you used.

I was careful when removing the nut on the hot side to not strike anything with the wrench (used an extension to elevate that wrench handle) and kept some sideways tension on the connection that is already there, to insure that the existing circuit was not interrupted. I did this to insure that there was no memory loss or reprogramming needed. I have no way of knowing if breaking the circuit would have caused such an issue, but better safe than...

I installed an inline fuse and led the wire out through my lower grille. This last part was not so easy so I used a piece of coat hanger wire fed in from the front of the vehicle. When I finally found a path that worked, I duct taped the battery wire to the coat hanger wire, and pulled it back out.

Good luck!
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  #4  
Old 02-03-2013, 06:42 PM
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Chuck W. Chuck W. is offline
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I hard wired mine and ran the wires out of the bottom right air scoop. The wires push up into the scoop when not in use. You will need to add some length to reach though. The charging nuts come off to reveal studs that the rings go right over.



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  #5  
Old 02-04-2013, 08:07 AM
Sharbotcom Sharbotcom is offline
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Thanks guys. The first semi-warm day I'll pop the charging bolts and run the cables.
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  #6  
Old 11-05-2013, 06:37 AM
goodman goodman is offline
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How do you lengthen lead of Battery Tender?

Everyone knows E60's are notorious power vampires, so I pop the hood and use a Battery Tender whenever I'm not using the car. I would like to use the lead with the rings for a permanent installation, so I don't have to pop the hood open each time. The problem is the lead supplied with Battery Tender is too short to reach either the cowl or the area under the grill kidneys. How do you lengthen the lead?

Last edited by goodman; 11-05-2013 at 07:24 PM.
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  #7  
Old 11-05-2013, 08:51 AM
grover432 grover432 is offline
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This whole battery tender requirement thing shocked me when I first heard about it. It seems that some dealers in Canada were adding $400 - $500 to the PDI charges to install a trickle charger.

I now understand that all of the new BMWs may have need for battery top up in harsh (cold) climates in combination with short commutes. I think the BMW factory solution is the most elegant. The attached pictures are from a 2013 335 X Drive my colleague is driving.

My 2013 will have this same setup when it is delivered. I'm not sure how much I'll use it, but it is a simple hookup with a female to car/male to wall plug, with the spring door keeping dirt out. My understanding is our cars already have a wiring harness to take the power directly to the battery (I could be wrong about that though).
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  #8  
Old 11-05-2013, 07:34 PM
goodman goodman is offline
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Quite elegant. Thank you for the photos.

Last edited by goodman; 11-05-2013 at 07:38 PM.
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  #9  
Old 11-06-2013, 04:38 AM
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Donm Donm is offline
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Quote:
Originally Posted by goodman View Post
Everyone knows E60's are notorious power vampires, so I pop the hood and use a Battery Tender whenever I'm not using the car. I would like to use the lead with the rings for a permanent installation, so I don't have to pop the hood open each time. The problem is the lead supplied with Battery Tender is too short to reach either the cowl or the area under the grill kidneys. How do you lengthen the lead?
16 gauge lamp cord, soldering iron and heat shrink tubing. If you don't have the tools just ask the neighborhood fix it guy with the workshop.
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