Battery Life Problems

Discussion in 'MacBook Pro' started by wgama, Jul 30, 2007.

  1. wgama macrumors newbie

    Jul 30, 2007

    I recently bought a MBP and I am having some battery issues.

    I only have 4 cycles in my battery, the first one was a battery calibration, this went very well and i was able to get a descent 4 hours of battery, but on the others, i got really poor battery life. battery time would start stating 4:10 and by the time the percentages would be 63% the time would be reduced to 0:43 mins.

    I did notice that if I reseted the mac the battery life would go back to normal, but fall too much as the percentages went down.

    I was using better battery life ,Firefox, running 2 widgets with screen about 2 from min brightness on virtually all cycles.

    CocunutBattery says it is 100% healthy with 5569.

    Can anybody help me?

    Thanks in advance
  2. CalBoy macrumors 604


    May 21, 2007
    When you say that the battery fell to 43 minutes, did you do anything different? Did you start watching a video online or something? The percentages are based on an estimate of current power draw. Did you plug it back onto AC briefly? When the AC cord is plugged back in, the estimate changes to "time till charged."

    Now you said that you're still getting a full 4 hours out of it? That doesn't sound too far off. I wouldn't worry if you still have good battery life.
  3. kwood macrumors 6502a


    Jun 26, 2006
    In the Great White North.
    What happens when the 43 minutes runs out? Does the computer shut off or will it keep on?

    You can also re-create the energy saver settings and see if that fixes it. Do that this way:

    Move /Library/Preferences/SystemConfiguration/ to the desktop and restart the computer. The go to System Preferences>Energy Saver and re enter in your preferences.

    You can also try resetting the PRAM and SMC in this case to try and isolate hardware out of the equation.
  4. wgama thread starter macrumors newbie

    Jul 30, 2007
    I got 4 hours in my first cycle. In the remaining cycles I got about 2 hours to 2.5 hours

    When the minutes run out the computer goes into sleep mode.

    I'm going to do the PRAM reset and i have already done the SMC reset.

    And also the new energy saver profile.

    I will let you know how it works
  5. wgama thread starter macrumors newbie

    Jul 30, 2007
    I reseted the pram. But nothing changed

    It was good for the first 10 minutes, but after that times elapses battery life goes very low.

    Example: if I'm on battery, with a bunch of power savings activated, the battery time left will show 0:39, but after i reset the computer it shows 2:04, but 10 minutes after that it plunges.
  6. CalBoy macrumors 604


    May 21, 2007
    I think you may have a bad battery. Call Apple and explain your situation, do not go into a store. If you go into a store, they'll just say that it's normal. Over the phone, you can convince them to ship you a new battery.
  7. violet macrumors newbie

    Aug 1, 2007

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