Does using my laptop whilst plugged in have any effect on my battery?

Discussion in 'MacBook Pro' started by equalsabracket, Feb 28, 2010.

  1. equalsabracket macrumors regular

    Nov 10, 2008
    Sometimes i think about leaving my laptop on all night to download something but i'm unsure whether or not my battery will eventually stop working sooner if i leave it on when plugged in. Does the amount of time it spends switched on when plugged in have any effect on the battery? Will it make how long it lasts in a year from now less than it would be if i kept it on less whilst plugged in?
  2. MacDawg macrumors Core


    Mar 20, 2004
    "Between the Hedges"
  3. equalsabracket thread starter macrumors regular

    Nov 10, 2008
    Yeah, it does run down maybe once or twice a week but what i'm asking is does having the laptop on longer, whilst plugged in, have any effect on the battery life?
  4. Beutelkatze macrumors newbie

    Feb 22, 2010
    No, the battery will stop charging once it is full.
  5. darklich macrumors member

    Jan 31, 2010
    My Sony AW290 has a battery utility that allow the user to control how much of the battery gets charged while plugged. I use it plugged up most of the time, so I have it set at 50%. It is supposed to preserve the long term life of the battery by not fully charging it. I don't know if OSX has a similar utility.
  6. miles01110 macrumors Core


    Jul 24, 2006
    The Ivory Tower (I'm not coming down)
    There's not, as it's not needed.

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