Currently Being ModeratedJun 23, 2012 1:29 AM (in response to mondesigns)
Try this: It might or might not help but it's worth a try.
Do a SMC/PRAM reset.
Use your battery until it's down to 30% and then recharge it to full and see where your battery capacity is at.
Let me know if that works for you.
Currently Being ModeratedJun 23, 2012 3:11 AM (in response to mondesigns)
Do not drain your battery. Your MBP does not require calibration.
I'm not certain that you even have a problem. It is possible that what you thought was was a shutdown Mac was not the case.
Currently Being ModeratedJun 23, 2012 3:40 AM (in response to mondesigns)
Again, your MBP's battery doesn't need calibration and won't benefit from it. If you think the battery may be defective, take the machine to a Genius Bar and ask to have it tested.
Currently Being ModeratedJun 23, 2012 4:12 AM (in response to eww)
Thanks for the reply but the battery may not be defective because i am already past 6 hour of use with continious web browsing on battery and still 27 percent battery left( which is normal for my macbook pro). I am really confused because coconut battery and istat both says battery capacity 83 percent( yesterday it was 97 percent). I know calibration might not help but i want to try it before i take it to apple authorized dealer. No Genius Bar in my country(i m from Nepal). By battery capacity i mean battery health (not charge) just if anyone is confused.
Currently Being ModeratedJun 23, 2012 5:45 AM (in response to mondesigns)
As mentioned by others, draining your battery fully might do more damage than good to your MB.
That's why I've suggested you run it down to 30% then recharge it again.
OG and EWW's suggestions about not calibrating your battery is dead on.
We're all giving you sound advice. We wouldn't want to see you here in a month's time stating that you're battery is dead after a few months of use.
And since you've mentioned that you've already reach the 6 hour point with your MB on batteries, your MB's battery is in good condition.
Currently Being ModeratedJun 23, 2012 6:59 AM (in response to mondesigns)
But its battery capacity not the battery charge that decreased from 97 percent to 83 percent. I don't know what to do so i am calibrating the battery. Thanks for the reply.
Don't calibrate the battery, that will decrease its life!!
Currently Being ModeratedJun 23, 2012 8:43 AM (in response to Csound1)
Ok i started recharging the battery from 19 percent. Its fully charged now but battery capacity is still 83percent. Its stuck at 5732 mAh. Before when i used to charge and discarge the Macbook pro battery capacity used to fluctuate now is permantly stuck at that mAh. I am lost here.
Currently Being ModeratedJun 23, 2012 10:53 AM (in response to mondesigns)
Update: May be my battery chip which measure battery life is fried because i am at 99 percent charge still it show 24 min to charge fully. Still stuck at exactly 5732 mAh with no fluctuation at all during charge or discharge. Thanks for the help guys.
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