Those of you using a battery tender...
08-13-2010, 07:43 AM
#12
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My Ride: E61 545i Sport Touring
I suspect that my high battery drain was initially caused by the car continually being opened by prospective buyers and the battery never got charged properly and was at the end of its useful life. One thing I learnt was that the high discharge warning was more likely if the car never got to sleep (in my case because it was a novelty when I first had it and I kept going in and playing around). Some parts of the car take a lot of current whilst it's awake so now I purposely avoid unecessary intrusions. And the weekly charge no doubt helps too. With previous cars I have had batteries lasting over 10 years but I suspect this would be too much to expect with the kind of goings on with the electronics in the E60/1.
See Rudy's thread #5 in another post about E60 "High Battery Discharge" for other causes.
See Rudy's thread #5 in another post about E60 "High Battery Discharge" for other causes.
08-13-2010, 12:30 PM
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My Ride: G30 M550i
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I've seen that posted here many times but still don't believe it's true. If the car is working properly, it should still go to sleep if it's unlocked. With CA, it should even go to sleep with the unlocked and the key inside.
08-13-2010, 12:54 PM
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My Ride: 2006 530i, Jet Black, Tan, Premium, Steptronic
What a silly thing for the tech to say. The Battery Tender sold by BMW is the only BMW-approved charger for our cars.
08-14-2010, 01:07 PM
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My Ride: E61 545i Sport Touring
I can verify that my car goes to sleep normally locked or unlocked.
08-14-2010, 04:15 PM
#17
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My Ride: 08 550 Carbon Sport Almost everything factory, but no sound upgrades.
One would guess that BMW would only approve their brand of charger. My [un-approved] B&D cost about 1/3 of what I would have paid at the dealer parts counter.
sixcard
08-14-2010, 04:55 PM
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I'm not using a BMW battery tender. I'm using a Deltran Battery Tender Plus 12V @ 1.25A http://batterytender.com/automotive/...-at-1-25a.html
I'm assuming that BMW's battery tender is different?
08-14-2010, 06:46 PM
#19
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I'm not using a BMW battery tender. I'm using a Deltran Battery Tender Plus 12V @ 1.25A http://batterytender.com/automotive/...-at-1-25a.html
I'm assuming that BMW's battery tender is different?
I'm assuming that BMW's battery tender is different?
http://accessories.bmwusa.com/ItemVi...=6&subItemId=1
08-14-2010, 06:55 PM
#20
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My Ride: MY07 525xi Silver Gray
Model Year: 2007
Probably just bein' generic ... not to use *any* kind of battery tender ...
What a silly thing for the tech to say. The Battery Tender sold by BMW is the only BMW-approved charger for our cars.
Originally Posted by tta197' timestamp='1281660978' post='1222177
My 08 535i does the same thing with my battery tender. Took it in to get checked and they nothing wrong. When I mentioned that I use a battery tender, the technician told to stop using it.
It screws with computer. I've stopped using and have had no issues.
It screws with computer. I've stopped using and have had no issues.