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E63 / E64 6 Series (2003 - 2013)
The E63/E64 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 04-18-2011, 07:10 AM
mpc1971 mpc1971 is offline
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another battery thread

fellas,

my battery indicator window on my 645 is black, so far ,touch wood it hasn't caused any errors/ problems. left door open the other day while doing something and i got a "bong" and idrive said battery low. but car started fine.

since the wife now has a run around the car doesn't get used as much, so proberly not getting a good charge when out and about.

i then noticed the thread about the ctek 7002

so first question is , is it too late for my battery. do i need to get a new one before the problems start

or
can i get myself a ctek and get it charged ??

also is the ctek 7002 the same as a 7000. from what i can find it sounds like the 7002 is for you fellas in the states and the 7000 is for us in the u.k ???

anyone ??
wheres yorgi , he'll know
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  #2  
Old 04-18-2011, 07:25 AM
Amanintown Amanintown is offline
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Quote:
Originally Posted by mpc1971 View Post
fellas,

my battery indicator window on my 645 is black, so far ,touch wood it hasn't caused any errors/ problems. left door open the other day while doing something and i got a "bong" and idrive said battery low. but car started fine.

since the wife now has a run around the car doesn't get used as much, so proberly not getting a good charge when out and about.

i then noticed the thread about the ctek 7002

so first question is , is it too late for my battery. do i need to get a new one before the problems start

or
can i get myself a ctek and get it charged ??

also is the ctek 7002 the same as a 7000. from what i can find it sounds like the 7002 is for you fellas in the states and the 7000 is for us in the u.k ???

anyone ??
wheres yorgi , he'll know

Get a new battery like, NOW or else it will die on you one fine day which is not very far away without further warning
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  #3  
Old 04-18-2011, 09:03 AM
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645/333 645/333 is offline
Michael
Location: uk
 
Join Date: Jun 2010
Posts: 1,160
Mein Auto: Black Sapphire BMW Z4 3L
Black indicator on battery

what the black battery indicator shows is the battery is below an acceptable charge level. You can purchase a Ctek 7000 in the UK, that is what mine is !! You can use the recover battery feature on this charger and you may well get the battery back to full charge. Mine was in the black, I bought the charger, did the recover cycle , ( but left the boot open and moved stuff from around the battery just in case ???).
As you are using your car very little do as I do and do a charge on a weekly basis, then you may not have to purchase a new battery.
There are lots of comments about where to charge from ie engine bay or boot , I have a ctek wire permanently connected to the terminals around the battery and charge through this......in the boot. BMW sell these in their parts department or buy from Ctek. either way makes charging very convenient.

Last edited by 645/333; 04-18-2011 at 09:04 AM.
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  #4  
Old 04-18-2011, 09:19 AM
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Yorgi Yorgi is offline
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I looked into this a bit before buying the 7002.

The CTEK 7002 is a newer version of the 7000 but both are essentially the same. The 7002 has newly designed battery leads (fully covered in plastic for 7002 vs exposed ~1" tips on the 7000) and a slightly different battery recondition (RECOND) mode. The 7000 uses 16.0V for 4 hours in RECOND mode where the 7002 uses 15.7V for 0.5 to 4 hours. I guess CTECK determined the full 4 hours @ 16V was too aggressive in some cases.

CTEK makes separate versions for North America vs the rest of the world. North America gets the Multi US 7002 and UK gets the Multi XS 7000. I don't think there is a 7002 version for the UK but I never really looked into that.
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  #5  
Old 04-18-2011, 09:40 AM
mpc1971 mpc1971 is offline
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cracking info guys.

645 where in uk are you ? is yours 04 ?

whats the general idea on the charging point then ? battery posts or under the hood?

really dont wanna fry my battery and surrounding parts by doing on the posts but if 645 has done it , does that mean mine should be good? there seems to be so many diiferent ideas on this.

where does yorgi charge his from ??

cheers fellas
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  #6  
Old 04-18-2011, 10:09 AM
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Yorgi Yorgi is offline
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The Intelligent Battery Sensor (IBS) is one of things that has been bugging me since I am not 100% clear on the details of how it works.

The TIS says that you should charge from the terminals under the hood and not bypass the IBS but the TIS also has instructions about charging batteries when removed from the car.

Until I can determine if it's 100% safe to charge directly I always charge from the terminals under the hod.
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  #7  
Old 04-18-2011, 10:33 AM
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TxTaz TxTaz is offline
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I charge from under the hood.
Here is the rational behind it...
IBS monitors the charge to the battery over the life of the battery. As batteries get older they require a higher charge voltage to maintain a constant current (due to sulfate buildup). Chargers use varying currents for different charges. A float is a lower current and a recon or sulfate breaking charge is higher. The concept is to break sulfates off the plates and keep them in solution where they are most effective and makes for a larger surface area on the plates for electrochemical reactions (the way a battery works).
So let's say you always charge directly to the battery, the charge voltage goes up over time and IBS doesn't know this. IBS directly controls the charge from the alternator and will regulate a lower voltage hence lower current because it has not monitored previous chargings. IBS follows a predefined battery life cycle which includes time, temperature and current if it is complete.

At some point in time, IBS will be providing lower current to the battery than the car load. Eventually you will have a dead battery unless you charge it between uses.

I have not found any technical information on this, only block diagrams. However I do know battery and charger theories quit well.
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