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6 Series
The BMW 6 Series builds on BMW's sporty heritage with aggressive lines and an incredible motor to back the design up. Available in coupe and convertible trims with a standard 4.8 liter engine producing 360 horsepower and 360 lb-ft of torque, the 6-series is a popular choice that exceeds expectations.

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  #1  
Old 04-12-2011, 10:13 AM
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BlaZinMJ3 BlaZinMJ3 is offline
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Another Battery Thread? Seriously?

Well my battery has been giving me issues the last week. Some days it starts up, some days it doesnt, some days my car is driving and accelerated super slow. so i searched (see some people search!) and i went to autozone today and bought the recommended battery from DuraLast (made in Germany btw). The install was less than five min. I took the advice here on the board and ran some jumper cables from the hood of the 6er to my truck while changing out the battery so that the car had a constant flow of electricity. after the install my car started right up and wow it even sounds better. easy, and only cost me $150 vs. $230 from the dealer
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  #2  
Old 04-12-2011, 11:19 AM
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TopDownInFL TopDownInFL is offline
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Very James Bond of you to run cables while changing the battery.
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  #3  
Old 04-12-2011, 11:59 AM
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BlaZinMJ3 BlaZinMJ3 is offline
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Quote:
Originally Posted by TopDownInFL View Post
Very James Bond of you to run cables while changing the battery.
yeah definitely was a risk but at the end, i have zero error codes and didnt even have to reset anything or the clock
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Old 04-12-2011, 12:51 PM
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  #5  
Old 04-12-2011, 04:05 PM
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Ctek 7000

The Ctek 7000 battery charger has a facility which will maintain the current to the car if you disconnect the battery to replace it, thus safely changing the battery without affecting the electronics or losing settings
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  #6  
Old 04-12-2011, 04:13 PM
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  #7  
Old 04-12-2011, 04:24 PM
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I'd just worry about the life of the battery since the 6er charges it differently based on how old it thinks the battery is. E.G. You have an ancient battery, swap out for new one, car thinks it still has old battery and doesn't charge it properly. This results in lower lifespan. Although, you are offsetting this issue by using a less expensive battery
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Old 04-12-2011, 04:58 PM
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+1 on the Ctek. I love mine.

You need to do a battery reset when you install a new battery. That way the charge circuit knows how much charge it is taking. It is different between new batteries and old.
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  #9  
Old 04-12-2011, 06:21 PM
JlMMY JlMMY is offline
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Quote:
Originally Posted by petriej View Post
I'd just worry about the life of the battery since the 6er charges it differently based on how old it thinks the battery is. E.G. You have an ancient battery, swap out for new one, car thinks it still has old battery and doesn't charge it properly. This results in lower lifespan. Although, you are offsetting this issue by using a less expensive battery
Me is beginning to think the savings will outpace the profile charging character of the bmw branded battery. How many years will unregistered battery last compared to OEM?
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  #10  
Old 04-12-2011, 06:24 PM
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Finally, a happy ending battery thread, with some forums searching thrown in for good measure.
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  #11  
Old 04-12-2011, 07:39 PM
tampamark tampamark is online now
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Quote:
Originally Posted by JlMMY View Post
Me is beginning to think the savings will outpace the profile charging character of the bmw branded battery. How many years will unregistered battery last compared to OEM?
You are mistaking the "profile charging character" with being a function of the OEM battery. It is something the car does regardless of the battery manufacturer. Registering is an easy function, it is basically resetting the cars computer to recognize that the new battery is in and vary the charge for maximum lifespan. Aftermarket also. Some have reported getting independent shops to do this for $35. Others have taken the car into the dealer and they charged $50.

For instance, buying an OEM battery and installing it yourself doesn't "register" it to the car. You would still have to take it somewhere to do this. Your statement comparing unregistered battery to OEM indicates you may think incorrectly on this.

I have read many threads about this and unless some of the more technical members disagree (txtaz or yorgi) then I think this is correct. Personally I feel it is more over-engineering and completely stupid that this was designed into the car. If everyone who owns a BMW raved about long battery life I would be sold. But it is as mixed a bag of results as any other car.
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  #12  
Old 04-12-2011, 09:29 PM
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Once again I will harp on getting a Bavarian Technic kit. It will pay for itself and you will have the knowledge and piece of mind that what your SA tells you and the tool tells you match. Plus you can register your battery.

tampamark is right. Sometimes I think some some BMW IT head had extra money and manpower and came up with some completely strange stuff. Just imagine what didn't make it to the cars.

So now I have my car monitoring the charge sent by my Ctek 7000 smart charger. Ohhh, yeah these are the new BMW re-labeled chargers.

Now if only they could come up with something to monitor the CTek. OMG the madness...when will it end?
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  #13  
Old 04-12-2011, 09:45 PM
ProRail ProRail is offline
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Quote:
Originally Posted by JlMMY View Post
Me is beginning to think the savings will outpace the profile charging character of the bmw branded battery. How many years will unregistered battery last compared to OEM?
Me is uncertain about this.
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  #14  
Old 04-12-2011, 09:48 PM
tampamark tampamark is online now
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Quote:
Originally Posted by TxTaz View Post

So now I have my car monitoring the charge sent by my Ctek 7000 smart charger. Ohhh, yeah these are the new BMW re-labeled chargers.
Food for thought. If this charging system is so damn smart and adjusts itself to match the battery as it diminishes...why can't it determine on it's own that the battery is at full capacity when you install a new one?

Built in service item perhaps?

Quote:
Originally Posted by TxTaz View Post

Now if only they could come up with something to monitor the CTek. OMG the madness...when will it end?
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Old 04-12-2011, 09:49 PM
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BlaZinMJ3 BlaZinMJ3 is offline
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For a battery to die at 50K miles is just plain terrible. I will talk to my SA and see what she thinks. At this point though I'm just going to drive and enjoy the savings. I'm not one to car about maintenance but 500$ to install and program a battery is just plain insane for such a simple project.
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  #16  
Old 04-12-2011, 09:56 PM
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Quote:
Originally Posted by BlaZinMJ3 View Post
For a battery to die at 50K miles is just plain terrible. I will talk to my SA and see what she thinks. At this point though I'm just going to drive and enjoy the savings. I'm not one to car about maintenance but 500$ to install and program a battery is just plain insane for such a simple project.
I am not sure a battery is something you can necessary link to mileage. It is more a time and usage factor. Number of starts, duration between charging, blah blah. I am no battery scientist...
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  #17  
Old 04-12-2011, 10:08 PM
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Quote:
Originally Posted by tampamark View Post
I am not sure a battery is something you can necessary link to mileage. It is more a time and usage factor. Number of starts, duration between charging, blah blah. I am no battery scientist...
I understand where you are coming from but i drive 3 different cars on a weekly basis and each one gets its turn depending on day. None of my other cars have had an issue either. Now granted, my 6er isnt driving all the time but i still feel that shouldnt warrant that kind of life span. At the end of the day, i love my 6er the most but i wont ever pay that much for something that takes 5 minutes to install.
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  #18  
Old 04-12-2011, 10:37 PM
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I hear you. I can't believe people buy OEM batteries when aftermarket alternatives are so readily available and work as well.

On a side note, the battery in my SXR (stand-up jetski) is going on 6 years. I am just amazed that it has lasted this long. The OEM Yuasa battery ROCKS. That along with regular usage and a battery tender has kept me in business.
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Old 04-12-2011, 11:13 PM
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Yeah i have Yuasa battery as well in my sea doo. they make the best batteries no doubt
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  #20  
Old 04-13-2011, 03:39 AM
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Ctek 7000

TxTaz is correct, given that the control circuitry is supposedly monitoring the charging of the battery and regulating the charge in part based on the life of the battery. When you considered the volume of battery issues and that many members have, and now do a separate weekly charge with such chargers as the Ctek , makes a nonsense of the claims of charging a battery in line with its age. As pointed out the Ctek will charge at it manufactured rate and has nothing to do with BMW specification, other than the BMW Oem charger is a Ctek rebadged........ Battery issues is like 'Bringing Baboons from around the mountain' (a South African phrase) meaning why look for trouble when none really exists.
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Old 04-13-2011, 12:54 PM
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Quote:
Originally Posted by 645/333 View Post
Battery issues is like 'Bringing Baboons from around the mountain' (a South African phrase) meaning why look for trouble when none really exists.
LOL! had to laugh at that phrase but it makes sense. "Don't mess with it if it ain't broke". But these car makers have to justify the ever increasing cost for cars as they throw more and more unwanted, useless crap in them.
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