battery is acting odd O_o

Discussion in 'MacBook Pro' started by krnjason, Aug 10, 2008.

  1. krnjason macrumors newbie

    Joined:
    Jun 1, 2008
    #1
    i just bought my mbp about a month ago and a couple weeks i noticed that when its pluged in from the power adapter, the battery would ALWAYS linger around 97-99% never 100 even tho its plugged in. and to reach 100, i would have to unplug and manually drain the battery a bit to fill it back up to 100.

    Now, when i plug it in its at 99% then when i unplug it, it miraculously goes back to 100% huh? this doesnt make sense to me. you think i should go to the apple store for a replacement battery?

    the warranties covers for 90days right? i dont have the apple care plan.
     
  2. EricNau Moderator emeritus

    EricNau

    Joined:
    Apr 27, 2005
    Location:
    San Francisco, CA
    #2
    Make sure you've calibrated the battery.

    Also, your MBP is covered for parts and labor for one year, with 90 days of phone support.
     
  3. atluten macrumors 6502

    Joined:
    Mar 24, 2008
    #3
    The laptop discharges the battery a little even if the computer is plugged into an adaptor so it conditions the battery. It usually just lets the battery go down a few percent but charging the battery back up to 100% then letting it discharge back down again. This might explain what you're seeing.
     

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