Battery Lights on MPB !?!

Discussion in 'MacBook Pro' started by amitdoc2b, Feb 29, 2008.

  1. amitdoc2b macrumors 6502a

    Joined:
    Feb 25, 2008
    #1
    Hi.

    I noticed there are like 5 battery lights on the macbook pro. If the battery has 3 out of 5 lights light up, does that mean there is 60% battery life left before next charge, or is there only 60% battery life left on the entire battery before its completely dead and can no longer charge again?

    Thanks!
     
  2. Arjy macrumors member

    Joined:
    Nov 19, 2007
    #2
    How much charge is left before you run out of power. Not the health of the battery itself.
     
  3. ColonelSmith macrumors member

    Joined:
    Jan 30, 2008
    Location:
    Ohio
    #3

    They are on all Apple notebooks and tell you how much battery is left before you will need to charge again.
     
  4. AliensAreFuzzy macrumors 68000

    AliensAreFuzzy

    Joined:
    May 30, 2004
    Location:
    Madison, WI
    #4
    It's the current charge on the battery. So 3 lights means 60% left, but you an charge it to get back to 5 lights.
     
  5. joefinan macrumors 6502a

    Joined:
    Sep 14, 2007
    Location:
    Kingston-Upon-Thames, UK
    #5
    The lights on the battery are an indication - to know the exact percentage, have a look on the taskbar.
     
  6. mrwizardno2 macrumors 6502a

    mrwizardno2

    Joined:
    Jun 19, 2007
    Location:
    Columbus, OH
    #6
    Those batteries are intelligent enough (read: have a controller on-board) to not fall below the "point of no return"
     
  7. Consultant macrumors G5

    Consultant

    Joined:
    Jun 27, 2007
    #7
    It shows charge status.

    All lights = full charge

    The life of the battery can sort of be determined by looking at
    system profiler and look under Power, but there are many factors, including cycle count.

    If you plug in your laptop all the time without using on battery, the battery will actually degrade. You need to use it on battery, fully discharge and charge, once in awhile.
     

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