New MBP battery

Discussion in 'MacBook Pro' started by rj19832008, Nov 9, 2008.

  1. rj19832008 macrumors newbie

    Nov 9, 2008
    Hi all,

    I have just got a new MBP (first apple) and I'm as close to being in love with a bit of aluminium as is humanly possible!

    However, I read the battery life should be up around 4-5 hours. Mine only lasts 2.5 max. Its not like I'm constantly editing movies or watching DVDs either...

    Am I missing something (changing settings or whatever) or do you think I have a faulty battery?

    Thanks in advance for your help!

  2. Tacos! macrumors member

    Jun 2, 2007
  3. rj19832008 thread starter macrumors newbie

    Nov 9, 2008
  4. Tacos! macrumors member

    Jun 2, 2007
    Calibrating is when you let it drain all the way until it sleeps your computer and then you plug the power cord in and let it go all the way to 100%. This calibrates the battery and right after you do it, it should last alot longer.

    Is your display brightness on all the way? That also drains the battery fairly quickly.
  5. rj19832008 thread starter macrumors newbie

    Nov 9, 2008
    thanks, I unwittingly did that yesterday that would point towards a faulty battery right?
  6. guitarmaster18 macrumors regular


    Mar 27, 2007
    Not necissarily, I would recommend you download coconutbattery from here:

    CoconutBattery gives you all the info you need for determining the health of your battery. The capacity bar will give you the current health of your battery, if it's anything below 90%, then something's wrong. Otherwise, you're fine :)

    PS: I wouldn't take the battery benchmarks on Apple's site too seriously, lab tests are always going to be better than real life use. Real life depends on a lot of factors that Apple specifically cuts out of their tests to get better results.
  7. scottintosh macrumors member

    Jun 15, 2008
    I am getting about the same (about 3 hours) on my new MBP.. Make sure that you are using the 9400m GPU when on battery power, and turn off Bluetooth.

    One thing I found usefull is keeping Activity Monitor open and have the Dock Icon display processor usage. Some times a site on safari that I am not even using will be playing some flash content or something and using the processors and draining the battery faster..
  8. kobefan234 macrumors 6502


    May 12, 2008
    I don't get it when you say let it drain all the way until it sleeps!:confused:
  9. SchneiderMan macrumors G3


    May 25, 2008
    small print on the apple site states that they have those 4-5 hours battery times from testing it on a 2.4/2gbram macbook pro with screen brightness set on 50%.. try that. :apple:
  10. okrelayer macrumors 6502a

    May 25, 2008
    i have a new macbook pro. and my battery with mail opened, itunes opened (no music playing), adium opened, netnewswire opened, blue tooth mouse, and wifi on. I get about 4 1/2 hours with half screen brightness. if i start listening to music it gets closer to 3 hours and 45 min or so.
  11. SchneiderMan macrumors G3


    May 25, 2008
    told you, "Testing conducted by Apple in October 2008 using preproduction 2.4GHz Intel Core 2 Duo–based MacBook Pro units with a Better Battery Life setting. Battery life depends on configuration and use. See for more information. The wireless productivity test measures battery life by wirelessly browsing various websites and editing text in a word processing document with display brightness set to 50%"
  12. rj19832008 thread starter macrumors newbie

    Nov 9, 2008
    Thanks all. I've got coconut battery and it says its on I guess its not so bad.

    It might be because I'm using a usb modem I guess.

    I've booked in with the macgenius on Weds so I'll check for sure...

    Really impressed with the knowledge of everyone here!
  13. Red-red macrumors 6502

    Jul 17, 2007
    Your health will go up and down. Mine is mostly at 100% but does drop sometimes then goes back to 100%.

    I've not actually timed how much I get because I top it up throughout the day.
  14. dukedvl macrumors member

    Aug 5, 2008

    I am averaging around 3-3.5 hours. The only time I have ever seen my time remaining at 5 hours was when I turned off wireless, turned my display down to 1-2 bars, turned off the keyboard backlight and bluetooth was already off.

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