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E60 (2004 - 2010)
BMW 5-Series (E60 chassis) was first seen in the Unites States in the fall of 2003 with a 2004 Model Year designation. The E60 is now available as a 528i, 528xi, 535i, 535xi, 550i and a 535xi sports wagon! -- View the E60 Wiki

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  #1  
Old 09-28-2012, 12:04 AM
kskane's Avatar
kskane kskane is offline
From DownUnder
Location: Australia
 
Join Date: Oct 2009
Posts: 722
Mein Auto: '04 525i M54 with 6HP19Z
Battery Discharge

If the battery is fully charged and giving you 12.4/5v output on standby, then how long can the car sit before the battery will drain to a level where jump start is necessary? I have the old white lead-acid battery on my E60.

Also, how low does the battery has to get to i.e. 1v, or 2v or 10v at which it won't be able to start the car?
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  #2  
Old 09-28-2012, 08:27 AM
pcy pcy is offline
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Location: Boston
 
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Mein Auto: '06 530i, '07 C280, ML320
100% charged = 12.6 volts
75% charged = 12.4 volts
50% charged = 12.2 volts
25% charged = 12 volts
0% charged = anything less than 11.8 volts
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  #3  
Old 09-28-2012, 06:50 PM
kskane's Avatar
kskane kskane is offline
From DownUnder
Location: Australia
 
Join Date: Oct 2009
Posts: 722
Mein Auto: '04 525i M54 with 6HP19Z
Quote:
Originally Posted by pcy View Post
100% charged = 12.6 volts
75% charged = 12.4 volts
50% charged = 12.2 volts
25% charged = 12 volts
0% charged = anything less than 11.8 volts
Thanks PCY. So by the looks of it, my battery is not be charged at all (as I read 11.7v in the cigarette lighter) and car should not start?

Also, does anyone know how long (in number of days) will it take to discharge from 100% down to 0% as described by PCY?

Last edited by kskane; 09-29-2012 at 02:47 AM.
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  #4  
Old 09-29-2012, 08:40 AM
pcy pcy is offline
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Location: Boston
 
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Mein Auto: '06 530i, '07 C280, ML320
Quote:
Originally Posted by kskane View Post
...
Also, does anyone know how long (in number of days) will it take to discharge from 100% down to 0% as described by PCY?
That depends on several factors... such as, how long is the drive after each start (in other words, is the battery replenished after each start), is the alternator working properly, is the voltage regulator working properly, is the IBS (Intelligent Battery Sensor) working properly, ...

If your question is about how long it takes for the battery to discharge while the car is not being used...
Assuming the battery is holding the charge properly and there are no abnormal parasitic discharges, it should hold for more than 1 or 2 months.

Last edited by pcy; 09-29-2012 at 08:42 AM.
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  #5  
Old 09-30-2012, 03:18 AM
kskane's Avatar
kskane kskane is offline
From DownUnder
Location: Australia
 
Join Date: Oct 2009
Posts: 722
Mein Auto: '04 525i M54 with 6HP19Z
Quote:
Originally Posted by pcy View Post
That depends on several factors... such as, how long is the drive after each start (in other words, is the battery replenished after each start), is the alternator working properly, is the voltage regulator working properly, is the IBS (Intelligent Battery Sensor) working properly, ...

If your question is about how long it takes for the battery to discharge while the car is not being used...
Assuming the battery is holding the charge properly and there are no abnormal parasitic discharges, it should hold for more than 1 or 2 months.
Thanks PCY for the information. Due to some no normal circumstances, my car went down to 11.8v and the gave a warning of low battery which should obvious from your post information. But when I started the car, it started without any problem. So the only other questions that pops up in my head is, to what voltage does the battery needs to drain before it won't be able to start the car? I am assuming 1 or 2 months which you quoted above means no charge left in battery down to 0v.
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  #6  
Old 10-01-2012, 08:23 PM
bowang bowang is offline
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Location: OH
 
Join Date: Sep 2012
Posts: 21
Mein Auto: 2007 X3
I bought a new battery (AutoCraft H8-AGM) from Advance Auto Parts on 09/15/2012. So far everything works great. It's only $125.99 after using a link my friend sent to me. The link saved me $35 instantly. The battery can be used on X3, X5, X6, 3 Series and 5 Series. I got free installation at local Advance Auto Parts store. My local BMW dealer confirmed that there is no need to register the new battery on my 07 X3.

Here is the link (up to 40% on everything): http://advanceautoparts.**************************

H8-AGM Spes:
Acid Included: Yes
Battery Type: AGM
Battery Usage: Auto/Truck
BCI Group Size: H8
Cold Cranking Amps: 900
Cranking Amps: 1000
Deep Cycle/Starting: Dual Purpose
Maintenance Free: Yes
Reserve Capacity: 160
Terminal Type: SAE
Weight: 59.45
Length: 13.94
Width: 6.938
Height: 7.5

Warranty:
7 Year Warranty (3 Year FREE Replacement)
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