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  • 2,685. Re: Battery life dropped considerably on Mountain Lion.
    asengskie Level 1 Level 1 (0 points)

    hi again, thanks for your reply.. i already done all the smc and pram reset but didn't help me but i still have one more option the clean install... but still i need some time to back up all my stuff..

     

    i only have the warranty now and I'm hoping that i can get a battery replace but if not well no luck for me... and have to wait also for them to make the update for battery issue...

     

    ah so leaving the cable plugged will not harm the battery??? i thought its not a good thing to do, that's why sometimes or most of the time when i charge and gets a full charged i unplug the cable..

  • 2,686. Re: Battery life dropped considerably on Mountain Lion.
    richsadams Level 1 Level 1 (70 points)

    asengskie wrote:

     

    Hi Sulaiman, just want to ask because my MBP9 13" mid 2012 is 19weeks old and the battery cycle is about 125 and the battery health is 92% and i use it like everyday and i dont put it on sleep i just turn off the display at night and the keyborad light and most of the time i just leave my cable charger plugged... is this normal? because now I'm planning to go to apple service center near my place to ask for replacement of battery if its possible because it really drains so fast and now it only gives me like 2-3hrs when it is full charged =(

     

    FWIW you should NOT keep your MacBook plugged in all of the time, it will have a negative affect your battery's health.

     

    You should follow Apple's advice:

     

    http://www.apple.com/batteries/notebooks.html

     

    According to Apple MacBook batteries should last approximately 1,000 cycles before going under 80%.  More here:

     

    http://forums.macrumors.com/showpost.php?p=9875442&postcount=23

  • 2,687. Re: Battery life dropped considerably on Mountain Lion.
    Sulaiman.K Level 1 Level 1 (10 points)

    asengskie wrote:

     

    hi again, thanks for your reply.. i already done all the smc and pram reset but didn't help me but i still have one more option the clean install... but still i need some time to back up all my stuff..

     

    i only have the warranty now and I'm hoping that i can get a battery replace but if not well no luck for me... and have to wait also for them to make the update for battery issue...

     

    ah so leaving the cable plugged will not harm the battery??? i thought its not a good thing to do, that's why sometimes or most of the time when i charge and gets a full charged i unplug the cable..

    Leaving it plugged it will harm your battery health not the battery life. Once the battery is fully charged you could unplug from charge.

     

    Like richsadams says go through that link and read the instructions that Apple has given.

     

    Doing clean install you should backup everything from your hard drive using time machine and try the clean install following this link http://osxdaily.com/2012/07/25/how-to-clean-install-os-x-mountain-lion/ and you will need to create bootable usb follow this one http://osxdaily.com/2012/02/17/make-bootable-os-x-10-8-mountain-lion-usb-install -drive/

     

    Good luck.

    Sulaiman

  • 2,688. Re: Battery life dropped considerably on Mountain Lion.
    richsadams Level 1 Level 1 (70 points)

    Sulaiman.K wrote:

     

    ll you should backup everything from your hard drive using time machine and try the clean install following this link http://osxdaily.com/2012/07/25/how-to-clean-install-os-x-mountain-lion/ and you will need to create bootable usb follow this one http://osxdaily.com/2012/02/17/make-bootable-os-x-10-8-mountain-lion-usb-install -drive/

     

    Good luck.

    Sulaiman

     

    Correct, and if you're going to perform a clean install be sure to manually restore your files, re-download apps, etc.  To avoid re-importing any problems, do not use the "Restore from Time Machine" option.

     

    I've actually found it easier to clone the existing hard drive using a program like SuperDuper or Carbon Copy Cloner.  After a fresh install you can simply reconnect the cloned drive, drag and drop your files to your Mac's hard drive, then reinstall your apps, etc. 

  • 2,689. Re: Battery life dropped considerably on Mountain Lion.
    asengskie Level 1 Level 1 (0 points)

    thank you, that's my problem after an hour the battery goes red so i have to charge it again and then after maybe less than 3hrs it will fully chargd then have to unplugged again then it will drain again i think in 5hrs i have to charge it like twice and sometime 3 times =(

  • 2,690. Re: Battery life dropped considerably on Mountain Lion.
    richsadams Level 1 Level 1 (70 points)

    asengskie wrote:

     

    thank you, that's my problem after an hour the battery goes red so i have to charge it again and then after maybe less than 3hrs it will fully chargd then have to unplugged again then it will drain again i think in 5hrs i have to charge it like twice and sometime 3 times =(

     

    Sounds very frustrating.  Your battery health isn't great, but it's not bad for that many cycles.  However if you're only getting a few hours (or less) of normal use out of it there's something wrong.

     

    If it's only 19 weeks old, it's still under warranty.  Don't waste your time on any of the recommendations here...there's more to your issue than just an OS update.  Take it back to Apple, to an authorized service center or contact Apple directly and politely press them for a resolution.  Don't give up until you're satisfied.  They should take care of you.

     

    Best of luck!

  • 2,691. Re: Battery life dropped considerably on Mountain Lion.
    asengskie Level 1 Level 1 (0 points)

    yes, and that's the other reason that's bothers me so much is that its only 19 weeks old i really hope that they can really satisfy me when i go there.. and i'm going now =)

     

    thank you very much for all the infos/explanation/advice =)

  • 2,692. Re: Battery life dropped considerably on Mountain Lion.
    eddyr Level 1 Level 1 (15 points)

    MacBook Air 11" Mid 2011

     

    OK so did every attempt in this discussion including clean install of Lion and then back to ML after the problem persited with Lion reinstalled.

     

    Had called and got a ticket for the problem with Mac Care finall 17/10/2012 went to Apple Store and basically demnaded a new battery as mine was down to 94% after 31 cycles and the Genius watched battery charge dissappearing while we watched.

     

    He did some diagnostic tests and nothing showed as a problem but agreed that soething was drasticly wrong and agreed new battery replaced there and then. Then a RMC reset.

     

    Returned home charged to 100% Have had the machine in sleep mode ever since and in 5 days asleep no apps open battery has dropped to 64% and showed 4.34 hours left. While typing this battery the charge has dropped to 58% and 2.4 hours remaining use so almost back to normal I guess for this machine although I am concerned that it's still leaking charge when asleep as I do not have Nap on and have killed notifications and removed it from menu bar.

     

    New battery still on first cycle and so 100% health updates to come now I've started using it again.

     

    A little off topic but waiting patiently for tomorrows announcments to see if there will be new iMacs hanging out for one or a Mac Mini with a samsung monitor MMmmm Mmmmmm

  • 2,693. Re: Battery life dropped considerably on Mountain Lion.
    asengskie Level 1 Level 1 (0 points)

    i just arrive from apple service center near here in my work.. and it made me really sad =( they need first to check up my mac and see what causes the problem and i have to wait until 1 week before i can get my laptop back to me " 1 WEEK" without my mac thats a burden... =( is it really that long T_T... and i ask if it's sure that they will replace my battery they said that they dont know they need first to check if its the battery or the motherboard O_O i dont know what to do should i go or wait for another month i still have 6mos to go before my 1yr warranty ends...

  • 2,694. Re: Battery life dropped considerably on Mountain Lion.
    Nickholl Level 1 Level 1 (0 points)

    I have the same issue asengskie!  Im not sure where we stand legaly, but if Ive bought something (especially something very expensive) and it doesnt work as expected or advertised, I expect to have it replaced or fixed pretty **** quickly! We shouldnt have to wait around for weeks/months for them to fix it. In my opinion, they should simply provide us with a replacement!.  The last time I went to the store they told me to wait for the next OS update - if apple dont release one this week then Im going back in and asking for a new one.

  • 2,695. Re: Battery life dropped considerably on Mountain Lion.
    asengskie Level 1 Level 1 (0 points)

    yes, and this is my first mac i thought i can only expenrience this battery issue on some other laptop but still it happens to me again... can i really ask for a new one??? maybe it still depends on the location if they will give...

     

    they are going to release a new update this week???

     

    my problem is i don't know how to leave without a laptop... and 1 week is too long =(

  • 2,696. Re: Battery life dropped considerably on Mountain Lion.
    Nickholl Level 1 Level 1 (0 points)

    I dont know if 'legaly' we can ask for a replacement straight away.  I feel your pain with regards to living without your computer - some of us reply on them for our living!

     

    i dont know if they will release an update, but the genius guy told me that they release them every 2-3weeks (which I was slightly dubious about) so if they havent released one soon then my patience will run out.

  • 2,697. Re: Battery life dropped considerably on Mountain Lion.
    Beisarius Level 1 Level 1 (0 points)

    My laptop was replaced, so new batery with it. One of my 4 MBAs had the battery issue, no this one.

     

    If either yourself and asengie keep your laptops plugged all the time you damagedyour batteries. They are supposed to be plugged for charging or calibration purposes (overtop charge) but not to be left plugged.

     

    Apple geniuses would do a attery repalcement first, and isolate the issue. Am fairly confident your issue will be resolved with abattery replacement, but will return if you keep it plugged the same. Previous posts explain why.

     

    Iti s also very possible that Sulaiman's is damaged by plugging, and asengie's by some other flaw, the ghost ML battery problem. Either case, wait for it to come back... and let us know.

  • 2,698. Re: Battery life dropped considerably on Mountain Lion.
    asengskie Level 1 Level 1 (0 points)

    i do plugged it all the time because of.. it drains so fast and i'm also worried that it may damage also the cable connector i forgot what it calls.. for doing the plugged and unplugged... but from now on i will avoid it...

     

    thank you really for all the help and advice... and infos...

     

    i will go on weds to confine my mac on apple service center... /sigh T_T

  • 2,699. Re: Battery life dropped considerably on Mountain Lion.
    Sulaiman.K Level 1 Level 1 (10 points)

    Beisarius wrote:

     

    My laptop was replaced, so new batery with it. One of my 4 MBAs had the battery issue, no this one.

     

    If either yourself and asengie keep your laptops plugged all the time you damagedyour batteries. They are supposed to be plugged for charging or calibration purposes (overtop charge) but not to be left plugged.

     

    Apple geniuses would do a attery repalcement first, and isolate the issue. Am fairly confident your issue will be resolved with abattery replacement, but will return if you keep it plugged the same. Previous posts explain why.

     

    Iti s also very possible that Sulaiman's is damaged by plugging, and asengie's by some other flaw, the ghost ML battery problem. Either case, wait for it to come back... and let us know.

    Hi Chris,

     

    Thanks for your response, I'll consider to replace my battery as for now i have took my laptop to the Apple Service center they have checked the battery and the battery isn't damaged, Once again i'll check for a week and see how the battery life goes if it's still negative i would consider your advise.

     

    Iti s also very possible that Sulaiman's is damaged by plugging, and asengie's by some other flaw, the ghost ML battery problem. Either case, wait for it to come back... and let us know.

    The battery is not damaged and my battery health is standing at 95% and the cycles count at 395 and the service provider says the result seems to be normal.

     

    Again Thanks for your response. I really appreciate your advise!

     

    Keep posted.

     

    Thanks,

    Sulaiman