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Mountain Lion -- Service Battery Warning

1145 Views 14 Replies Latest reply: Mar 30, 2013 8:07 PM by nmondal RSS
nmondal Calculating status...
Currently Being Moderated
Mar 27, 2013 10:38 PM

Hi All,

Recently I noticed that there is "Service Battery" warning at the power battery icon.

Mine is 33 months old MacBook pro, that would date it mid 2010.

According to the link here [http://support.apple.com/kb/ht1519] my expected cycle count should be 1000.

I have a cycle count of 158.

 

I used to recalibrate the battery almost every 2/3 months.

And, the battery life used to be long, real long, that is at least 6+ hours.

It used to take 2 hours to drain it off from 20% battery.

 

So I wanted to recalibrate again, and this time, the system lasted for less than 4 hours.

Today morning it was 10% battery, and within some 20 minutes the system want black, i.e. shut itself down.

Earlier, that is 1 month back, during calibration it actually went to 0%, stayed there at for some 10 minutes,

running how I do no tknow, and then shut itself down.

So, indeed there is a battery related problem.

 

But I am not so sure if this is a *real* battery problem of *callibration* problem?

 

Also the power adapter cord has damages in some portion, not too much though, it is perfectly working,

and band aided. Would that destroy my happyness with the battery like this?

 

I am running Mountain Lion now, and the battery life was way improved over Lion, till this happened.

Can you guys please suggest what else to be done?

 

I have taken the following steps:-

  1. Check with Coconut Battery [Says 75% of the original power it can hold now, comes green, no problem from that]
  2. Reset SMC --> No Luck
  3. Reset PRAM --> No Luck
  4. I am recalibrating now --> [If it works, well and good ]
  5. If it does not work, what I do now?

 

Shall I go to the store and change the battery? That would be sad, the marketed cycle count is 1000, am at 158 .

Any advice, suggestions would be of utmost help.

 

In the meantime I would keep you guys posted.


MacBook Pro, Mac OS X (10.7.2), 4GB ram - Mid 2010
  • clintonfrombirmingham Level 7 Level 7 (26,825 points)
    Currently Being Moderated
    Mar 27, 2013 10:43 PM (in response to nmondal)

    Your machine is one of the newer models with the battery that does not need calibration, unlike some of the older MacBook Pros. Unfortunately, you may have caused some damage to the battery by 'calibrating' it so often - I suspect that's why you're getting the "Service Battery" message.

     

    Sooner or later you're going to have to replace the battery - Apple considers the battery to be a user-consumable item and it sounds as if yours is almost 'consumed' even with the low cycle count.

     

    Clinton

  • mende1 Level 10 Level 10 (89,490 points)
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    Mar 28, 2013 4:49 AM (in response to nmondal)

    I don't consider MacRumors as a reliable source. If your Mac is showing "Service Battery", then there's nothing more you can do for your battery apart from taking it to an Apple Store or reseller to have the battery replaced. Another option you have is to use your computer connected permanently to a power source, but I don't think you would like that

  • clintonfrombirmingham Level 7 Level 7 (26,825 points)
    Currently Being Moderated
    Mar 28, 2013 4:53 AM (in response to nmondal)

    That's an old article and they also say:

     

    The built-in batteries in the newer Mac unibody notebooks come pre-calibrated and do not require regular calibration like the removable batteries.

    ...so I don't know if cailbration can or can't 'hurt' the battery health on the newer models.

     

    I agree with mende1 - get the battery replaced if you're not getting the time that you expect with it, or just live with it until it dies.

     

    Good luck,

     

    Clinton

  • Ralph Landry1 Level 7 Level 7 (28,985 points)
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    Mar 28, 2013 4:55 AM (in response to nmondal)

    Running the battery down to shutdown does not calibrate a Lithium-Ion battery, it only calibrates the charge reporting circuitry.  In fact, independent studies show that full dischartge/charge cycles degrade the life of a Lithium-Ion battery 4 to 5 times faster than cycles to only 50% discharge/charge.

     

    What information to you see when you go to the apple in the left corner of the menu bar, About This Mac, More Info, System Report, Hardware, Power then battery Condidition, Charge remaining, Capacity, Cycle Count and Voltage?

     

    If the Condition is anything but Normal it needs to be checked by an Apple tech at the Apple store genius bar.

  • mende1 Level 10 Level 10 (89,490 points)
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    Mar 28, 2013 5:59 AM (in response to nmondal)

    Nothing new. System Information shows that your battery has to be replaced. It's not normal that a battery with only 159 cycles is damaged

  • Ralph Landry1 Level 7 Level 7 (28,985 points)
    Currently Being Moderated
    Mar 28, 2013 6:04 AM (in response to nmondal)

    That is pretty clear that the battery needs to be replaced, they do not actually "service" the battery.

     

    While the cycle count is low for a failed battery, there have been a few similar issues the past couple of weeks.  The projected battery life of 1,000 charge cycles is a statistically-based estimate of the battery life, the point at which the capacity drops to 80% of the as-built capacity.  The battery-cycle count curve is a bell-shaped curve, with the peak at 1,000 cycles.  So there will be batteries that fail sooner and batteries that fail later.  You happened to get one that has failed sooner.  There are no guarantees a battery will survive to 1,000 cycles.

     

    Take the computer in for service and have the battery replaced, it won't heal itself so don't frustrate yourself trying.

  • mende1 Level 10 Level 10 (89,490 points)
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    Mar 28, 2013 6:38 AM (in response to nmondal)

    You are welcome

  • Ralph Landry1 Level 7 Level 7 (28,985 points)
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    Mar 28, 2013 6:56 AM (in response to nmondal)

    You're wlecome.  Did you buy AppleCare with the MBP?  If so, talk with the techs about whether or not you have any coverage for the battery.  They cost in the range of $129-149.

  • Ralph Landry1 Level 7 Level 7 (28,985 points)
    Currently Being Moderated
    Mar 28, 2013 10:07 AM (in response to nmondal)

    Not sure why but that has been reported by other users who had the service battery alert.  The replace alert never clears, however.  Don't fixate on it but be aware of the battery condition and if you get the alert or worse alert, take it in for testing.

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