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How To Replace The Central Locking Backup Battery


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#21 slindborg

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Posted 20 August 2011 - 10:15 AM

Since it wont be pulling much current its probably doable to fit a relay to the 12V line to only connect to the main car supply when the engine is running so it gets a charge but then prevents drain down when off :)

#22 VXTyrant

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Posted 21 July 2012 - 02:57 PM

Is this battery just for the 'secret button' or does it serve some other purpose?!

#23 Wolfstone

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Posted 22 September 2012 - 05:09 PM

Imnotworthy

My back up battery for the secret button has been dead for ages. This is now on my to-do list for the weekend. chinky chinky


82 weekends later and I finally got round to doing this. I now get a satisfying 'click' when I hit the secret ( :ninja:) button. Wonder how long it will last.........

#24 Wolfstone

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Posted 22 September 2012 - 08:34 PM

And just to add, I still don't understand why the button is such a secret. For the button to actually do anything you have to have the key fob and to press the button on the fob and the secret button at the same time.

#25 Tim_B

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Posted 14 October 2012 - 11:13 AM

Presume any of these cheaper alternatives to Halfords would be ok?

http://www.batteries...-Varta-AGM/210/
http://www.tayna.co....tery-P7521.html
http://www.battery2u...ies-YT4LBS.aspx
http://www.watchbatt...503014003.shtml

Versus Halfords at £35
http://www.halfords.com/webapp/wcs/stores/servlet/product_storeId_10001_catalogId_10151_productId_264311_langId_-1_categoryId_246903?cm_mmc=GooglePPC-_-3Bs%20-%20Batteries%20-%20Product-_-Motorcycle%20Battery%20Exact-_-yt4l-bs&source=ppc&_$ja=kw:yt4l-bs|cgn:Motorcycle+Battery+Exact|cgid:6391160269|tsid:35582|cn:3Bs+-+Batteries+-+Product|cid:74790469|lid:3271932367|mt:Exact|nw:search|crid:{creative}

#26 Tim_B

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Posted 14 October 2012 - 11:25 AM

http://www.thebatter...4l-bs-427-c.asp

will prob get this as can collect

#27 Zoobeef

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Posted 17 March 2014 - 06:00 PM

Just looking through the wiring diagrams and noticed this backup battery does have protection. Its charged through fuse FR1 and just after it in the diagrams is a diode V25. That should stop the backup battery draining should the main battery flatten.

#28 stigg10

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Posted 06 May 2018 - 03:38 PM

I just did mine today. Took 20mins. Fyi this is the battery I fitted, it was £24 delivered and was exactly the same as the one that came out: https://www.tayna.co...yuasa/ytx4l-bs/




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