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      04-18-2012, 08:06 PM   #1
ddbiii
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low battery charge

just got car back this is the 4th time i have had it in for this, always the same story , driving habits. charge the battery and thats it, with the suggestion of a trickle charger, thoughts ?
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      04-19-2012, 08:08 AM   #2
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Well if you do indeed drive infrequently, then a battery maintainer is definitely a good investment.
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      04-19-2012, 08:19 AM   #3
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they tested over night no draw down they say i drive every day.
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      04-19-2012, 08:30 AM   #4
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Just get a battery maintainer and call it a day.
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      04-19-2012, 08:36 AM   #5
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Just get a battery maintainer and call it a day.
^^^ +1 Battery Tender.
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      10-02-2012, 03:02 AM   #6
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Had this issue also, dealership told me it was due to the fact that the alternator doesn't kick in for 15-20 min so if your daily drive is under that then battery doesn't get a chance to charge. Installed the trickle charger and plug it in once a week to top off. Time will tell I guess!
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      10-02-2012, 09:27 AM   #7
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Quote:
Originally Posted by AW08M3 View Post
Had this issue also, dealership told me it was due to the fact that the alternator doesn't kick in for 15-20 min so if your daily drive is under that then battery doesn't get a chance to charge. Installed the trickle charger and plug it in once a week to top off. Time will tell I guess!
Thats a bunch of smoke. The alternator charges as long as the engine is running (variable no doubt but if it is spinning it is putting out current). Hook a volt meter up to the front jump posts, as soon as the car is started it puts out over 14 volts.
It may take 15-20 minutes to replace the charge that was taken out of the battery from starting the car and powering everything up. If it is only driven for 10 minutes I can see a cumulative draw.
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      10-18-2012, 07:42 PM   #8
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Just had a serious fight at my dealer...

I've had the battery charged twice, and had to call CAA twice for boosts over the past six months. No argument about "driver profile" - I do 30,000 clicks a year. The service manager refused to replace the battery under warranty at 80,000 clicks. They did, however, find a loose battery cable which may well explain the problems I had in the spring and summer. Now I've got warnings again at 90,000 - and the weather is about to get cold. The sales manager overruled the service manager and I'm getting a new battery Monday.
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