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Battery Health 77% after only 18 cycles

836 Views 14 Replies Latest reply: Jun 14, 2013 1:20 AM by DamienCarew RSS
DamienCarew Level 1 Level 1 (0 points)
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Oct 28, 2012 2:35 AM

OK just thought I post this for reference. My MB pro is only 18 months old but the battery health has dropped to 77% after only 18 cycles - Yeh I keep it plugged in when in use.

 

I am taking it to the repair center in Bangkok on Weds for a battery test.

 

I'll let you know how I get on and if they replace the battery. I have Apple Care.

MacBook Pro (13-inch Early 2011), OS X Mountain Lion (10.8.2)
  • pennbank Level 4 Level 4 (1,545 points)
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    Oct 28, 2012 3:33 AM (in response to DamienCarew)
  • sig Level 8 Level 8 (35,770 points)
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    Oct 28, 2012 3:37 AM (in response to DamienCarew)

    That battery should be replaced.

  • sig Level 8 Level 8 (35,770 points)
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    Nov 15, 2012 12:39 AM (in response to DamienCarew)

    The battery is bad. Get it replaced.

  • Vic-zx Level 1 Level 1 (5 points)
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    Nov 15, 2012 12:59 AM (in response to DamienCarew)

    After 18 months, 18 cycles is absolutely nothing! Ive had my mac since jan, I havent travelled much and im on 66 cycles, with 100% health. I also noticed that after a prolonged period of use from the AC, the battery health would start to drop a bit and the battery wouldnt charge to 100%. Then after removing AC and using for a few hours, it would charge back up to 100% and the health back to 100% too. So, without regular discharging of the battery it loses its abillity to store charge. I hardly ever shut down my mac, it always goes to sleep at night, and I restart every week or so. What I do now is if I know I wont take my mac off the charge for a few days, at least for one or two of the nights I will pull out the AC and let the mac sleep on battery. Then in the morning when you open it up plug the power back and it will charge up. Overnight it will only lose 4 or 5%, but for me it has been enough to keep the health and charge at 100% during periods of time that I know I wont take the laptop anywhere.

     

    As for your problem, I think you need to allow your mac to run down the battery and recharge again several times. If the hardware check showed up that the battery is fine, and with your limited number of cycles, I would run it down, charge it back up, run it down etc for a couple of days and then check the health. You might also want to install a program that gives you some realtime info about the battery. For example I use iStat, and have it configured to show the battery in the menu bar and some additional information when I click it as you can see below.  Keep us updated, good luck.
    battery1.jpg

  • Network 23 Level 6 Level 6 (11,505 points)
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    Nov 16, 2012 12:55 AM (in response to DamienCarew)

    The battery sounds defective. My battery's health is 98% and I have almost 120 cycles.

  • Kidsnd274 Calculating status...
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    Mar 6, 2013 5:51 AM (in response to DamienCarew)

    I wouldn't even want to use that battery, gives me the creeps.

  • mende1 Level 10 Level 10 (89,490 points)
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    Mar 9, 2013 10:45 PM (in response to DamienCarew)

    As others have said, replace the battery of that MacBook as soon as possible, because it's defective. You shouldn't use that battery, unless you only want to use the MacBook connected to its power adapter

  • mende1 Level 10 Level 10 (89,490 points)
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    Mar 9, 2013 10:50 PM (in response to DamienCarew)

    What I don't understand is how they can say that your battery is OK. In my opinion, some of the Apple resellers are hateful. That's why you should call Apple first, and then, take it to a reseller or maybe Apple repairs your computer (in some countries, they have this service)

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