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  1. #1

    MinaMACMan's Avatar
    Member Since
    Apr 16, 2007
    Location
    Redwood City, CA / Stanford, CA
    Posts
    1,792
    Specs:
    MacBook, Black, 2.0GHz C2D, 2GB RAMs, 160GB HD
    The New Battery DID WHAAAA?!!
    Hello all,

    After I download the Battery Update a few days a go I noticed major deterioration in the batery performace. Called apple and they guided me throug resetting the PMU and that didn't fixed it so they replaced my battery.

    I just got the new Battery today and it was at 66% charge when I got it, showed about 4:01 hrs till empty I was like WOW, that amazing, not a second later, as soon as wireless network kicked in it droped to 2:01 hrs, COME ON, no ways wireless connection can't just shave 2 Hrs clean.

    So I turned off Airport and I got back only 20 min.

    I know it might still need to be calibrated, but daiiiiiimmmmmnnnnn its just wierd.

    Let me know what u guys think.

    Cheers

  2. #2

    mo010's Avatar
    Member Since
    Apr 29, 2007
    Location
    Jeddah, Saudi Arabia
    Posts
    22
    Specs:
    MacBook white, 2.0 GHz Intel Core 2 Duo, 1GB memory and 80GB hard drive, iPhone 8GB
    My battery now is on 100% and i got 4:10 with AirPort on. I think 2hrs with 66% and AirPort on is normal.

    Oh, is it bad for the battery to leave the charger on while the MacBook is off and its 100% charged? (sorry for hijacking your thread)

  3. #3

    caribiner23's Avatar
    Member Since
    Feb 06, 2005
    Location
    Chicago
    Posts
    1,543
    Specs:
    MacBook Pro Retina 13" • iPhone 6 • iPad Air • and many iPods
    The calculation for the charge time remaining is a reference, not an exact scientific measurement. You'll notice it changing all the time.

    Sometimes, when I first unplug my power adapter, it says I have a few hundred hours' of charge time left-- then it catches up with reality.

    Quote Originally Posted by mo010 View Post
    ...Oh, is it bad for the battery to leave the charger on while the MacBook is off and its 100% charged? (sorry for hijacking your thread)
    No.

  4. #4

    MinaMACMan's Avatar
    Member Since
    Apr 16, 2007
    Location
    Redwood City, CA / Stanford, CA
    Posts
    1,792
    Specs:
    MacBook, Black, 2.0GHz C2D, 2GB RAMs, 160GB HD
    Well, thats kinda of reassuring.

    We'll see how it behaves after I calibrate it later on tonite. I am still using it rite now its at 48% so we'll see what happens by the time I get to my hotel.

    Cheers I will post the updates.

    PS mo010, no worries its all good

    Mina

  5. #5

    cwa107's Avatar
    Member Since
    Dec 20, 2006
    Location
    Lake Mary, Florida
    Posts
    26,840
    Specs:
    15" MBP, Core i7/2GHz, 8GB RAM, 480GB Crucial M500 SSD
    Quote Originally Posted by mo010 View Post
    My battery now is on 100% and i got 4:10 with AirPort on. I think 2hrs with 66% and AirPort on is normal.

    Oh, is it bad for the battery to leave the charger on while the MacBook is off and its 100% charged? (sorry for hijacking your thread)
    It's fine to leave it plugged in. The PMU will stop charging the battery when it's full regardless of whether the notebook is on or off.
    Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!

    https://youtu.be/KHZ8ek-6ccc

  6. #6

    cwa107's Avatar
    Member Since
    Dec 20, 2006
    Location
    Lake Mary, Florida
    Posts
    26,840
    Specs:
    15" MBP, Core i7/2GHz, 8GB RAM, 480GB Crucial M500 SSD
    Quote Originally Posted by caribiner23 View Post
    The calculation for the charge time remaining is a reference, not an exact scientific measurement. You'll notice it changing all the time.

    Sometimes, when I first unplug my power adapter, it says I have a few hundred hours' of charge time left-- then it catches up with reality.



    No.
    Agreed. Battery life measurement is not an exact science. There's no float inside the fuel tank like there is on a car. Analysis is done based on usage trends - and the time remaining is just an estimate based on several different variables.

    And yes, leaving wireless radios turned on (both Bluetooth and Airport) can consume a good bit of power. Another good method of reducing consumption is to lower your screen brightness to the minimum necessary for the ambient conditions.
    Liquid and computers don't mix. It might seem simple, but we see an incredible amount of people post here about spills. Keep drinks and other liquids away from your expensive electronics!

    https://youtu.be/KHZ8ek-6ccc

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