1 Reply Latest reply: Feb 24, 2010 2:08 PM by eww
Clay C Level 1 Level 1 (0 points)
Hey. I just purchased a 15inch 2.53 Ghz MacBook Pro. Is it ok if i leave the macbook pro plugged in even when the battery is full? I don't want to overcharge the battery or damage it with it being continually plugged in.

Someone told me that the new macbooks have a chip that shuts off the charging of the battery when it is plugged in. Is this true? Please help. Thanks.
  • eww Level 9 Level 9 (52,975 points)
    Yes, charging stops when the battery is fully charged, so you can't harm it by leaving it plugged in after then. This has been true of all Mac portables for about 18 years now. If there are still any notebook computers at all that don't do this, they are antiquated and ill-designed.

    You should not, however, leave your MBP plugged in ALL the time. The battery needs exercise to retain its health. Using the machine on battery power for an hour or two every day or two, adding up to about a full discharge-recharge cycle per week, is an ideal pattern of usage for maximum battery longevity.

    Read all about it in this outstanding User Tip:

    http://discussions.apple.com/thread.jspa?threadID=1764220