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E90/E91/E92/E93 (2006 - 2013)
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  #26  
Old 03-05-2013, 06:55 PM
aleks001 aleks001 is online now
Aleks
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Quote:
Originally Posted by sunny5280 View Post
Is there some problem you're trying to solve? Or are you just concerned about the voltage of the battery? As far as I can tell you haven't experienced any problem but rather decided to read the battery voltage for some unknown reason.
I already said why, because I don't know how old the battery is, I'm assuming it's the original and the car has been stationary for a couple of days now so I wanted to check the battery to see if a new one is needed.

Why, don't I just wait till it dies you ask ? Because I don't want to be stranded in some random place because of my battery.
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  #27  
Old 03-05-2013, 07:03 PM
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galahad05 galahad05 is offline
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For what it's worth, I intend to perform a Mike-Miller-style preventative with my car's battery one of these days. The car's approaching 6 years old, original battery.
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  #28  
Old 03-05-2013, 07:35 PM
sunny5280 sunny5280 is offline
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Quote:
Originally Posted by aleks001 View Post
I already said why, because I don't know how old the battery is, I'm assuming it's the original and the car has been stationary for a couple of days now so I wanted to check the battery to see if a new one is needed.

Why, don't I just wait till it dies you ask ? Because I don't want to be stranded in some random place because of my battery.
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  #29  
Old 03-05-2013, 08:21 PM
Pilgrim Pilgrim is offline
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Originally Posted by CuttyBuddyOX View Post
Off topic.... but...

Go Cougs!
Thanks kindly! That motion is always in order, any time! Go, COUGS!

Quote:
Originally Posted by sunny5280 View Post
Is there some problem you're trying to solve? Or are you just concerned about the voltage of the battery? As far as I can tell you haven't experienced any problem but rather decided to read the battery voltage for some unknown reason.
Actually a fair question, but the voltage drop you've seen makes me wary. If the car sits for a couple more days and the voltage drops below 12V, I'd consider the battery to be toast.

OTOH, if it doesn't drop farther, I'd probably keep driving it. You're doing the right measurement by using a multimeter on the battery terminals.
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  #30  
Old 03-05-2013, 08:29 PM
aleks001 aleks001 is online now
Aleks
Location: Brisbane, Australia
 
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Quote:
Originally Posted by Pilgrim View Post
Thanks kindly! That motion is always in order, any time! Go, COUGS!



Actually a fair question, but the voltage drop you've seen makes me wary. If the car sits for a couple more days and the voltage drops below 12V, I'd consider the battery to be toast.

OTOH, if it doesn't drop farther, I'd probably keep driving it. You're doing the right measurement by using a multimeter on the battery terminals.
Yeah, this is pretty much what I've decided as well
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  #31  
Old 03-05-2013, 08:42 PM
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Nordic_Kat Nordic_Kat is offline
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FWIW: When my OEM battery went south (apparently because of my bad behaviour), never once did I get a LOW BAT signal. It just wouldn't fire up. Upon pushing the key into the slot on the dash and pressing the start button I got all sorts of clicking and flashing dash lights, but no definitive warnings.

The lesson being, you can slowly drive a battery to it's death, like I apparently did with limited mileage hops and repetetive door opening cycles without locking the car. Now, every time I get out of the car, I lock the door. I also now, routinely tender the battery after the car's weekly bath.
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  #32  
Old 03-05-2013, 10:54 PM
unrealii unrealii is offline
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When you guys (and gals) shut your cars off, are you holding down the button long enough? When I bought my car, the previous owner told me to hold down the off button so it completely shuts off.

FYI, I had "increased battery discharge" warnings last night and this morning (was playing around with my dkan cable last night). I measured the voltage after half an hour from returning home from work and got 12.32. Seems my battery is still fighting to stay alive
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  #33  
Old 03-06-2013, 03:06 AM
aleks001 aleks001 is online now
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Day 3 of car being stationary - 11.98
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  #34  
Old 03-06-2013, 05:12 AM
calgaryx3 calgaryx3 is offline
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My 2 cents for what it is worth; get a new battery. If anything, it will give you a peace of mind. I have the original battery in our '07 E90 and have used a tender on it every winter while the car sleeps. That being said, I intend on replacing it this spring just for prevention purposes. Much like the OP, I don't need to get stranded anywhere due to a dead battery.

A
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  #35  
Old 03-06-2013, 07:09 AM
ptrcd003 ptrcd003 is offline
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Quote:
Originally Posted by aleks001 View Post
Day 3 of car being stationary - 11.98
Did you see my earlier post? Are you measuring voltage as soon as you unlock the doors? Try leaving the hood open and check the voltage ~10 minutes after.
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  #36  
Old 03-06-2013, 07:45 AM
sunny5280 sunny5280 is offline
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Here is what I've been able to ascertain:
  • The OP is not experiencing any issues related to a weak battery
  • The OP suspects the battery is original thus raising the concern it should be replaced
Given this he should replace the battery and be done with it.

Last edited by sunny5280; 03-06-2013 at 07:47 AM.
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  #37  
Old 03-06-2013, 08:24 AM
fb88 fb88 is offline
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Mein Auto: 2014 X1 xDrive28i
2006xi 138k miles original battery, have not tested w/meter, garage kept, 80 miles daily, will replace if I get any hint of rough start...
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  #38  
Old 03-06-2013, 04:02 PM
aleks001 aleks001 is online now
Aleks
Location: Brisbane, Australia
 
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Quote:
Originally Posted by ptrcd003 View Post
Did you see my earlier post? Are you measuring voltage as soon as you unlock the doors? Try leaving the hood open and check the voltage ~10 minutes after.
I must have missed it sorry, yes, I'm checking as soon as I unlock the doors. Today I'll leave it unlocked for a while first and then check
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  #39  
Old 03-06-2013, 04:02 PM
aleks001 aleks001 is online now
Aleks
Location: Brisbane, Australia
 
Join Date: Nov 2011
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Quote:
Originally Posted by sunny5280 View Post
Here is what I've been able to ascertain:
  • The OP is not experiencing any issues related to a weak battery
  • The OP suspects the battery is original thus raising the concern it should be replaced
Given this he should replace the battery and be done with it.
Sums it up pretty well :P
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  #40  
Old 03-06-2013, 04:11 PM
Woody Woody is offline
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Check after 18 minutes as this is when the car goes to sleep mode
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  #41  
Old 03-07-2013, 04:22 PM
aleks001 aleks001 is online now
Aleks
Location: Brisbane, Australia
 
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Ok, so day 4, unlocked the car it read 11.98 immediately and started to creep up slowly lol. So I waited 20 minutes and it finally rested at 12.12

So I think the battery is still good, it's obviously not at it's best, but I think it's got plenty left. I will charge it up and continue using it.
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