Do i have a bad battery?

Discussion in 'MacBook Pro' started by thesituation, Dec 20, 2010.

  1. UrbanerMezei macrumors member

    May 28, 2010
    Ottawa, Canada
    Manufactures typically declare a battery dead at 86%.
  2. GGJstudios macrumors Westmere


    May 16, 2008
    Not true.

    This should answer most, if not all, of your battery questions: Apple Notebook Battery FAQ
  3. simsaladimbamba

    Nov 28, 2010
    No. Do you calibrate at least once a month and use the MBP on battery every now and then?

    And read the link GGJstudios provided.
  4. thesituation thread starter macrumors member

    Oct 31, 2010
    in 16 weeks i have lost 11% of my macbook battery life. That does seem to me at least a defective battery.

    My cousins regular macbook is currently at 79% and he has had his macbook for 13 months now, compared to the 16 weeks of my macbook pro.

    also, my mac gets extremely hot, could this be a cause of this.

    I have callibrated my macbook batter twice in the 4 months, so i have been caliberating it regularly.

    I use the macbook everyday, i am a student so i carry it around wherever i go. It gets charged daily, outside the house i use the battery, inside the house i use it with the charger on.

    Why has my battery drained so quickly?

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