load battery only when under XX%

Discussion in 'macOS' started by Yin, Apr 12, 2011.

  1. Yin macrumors member

    Nov 29, 2010

    i own a 13" macbook pro 2011 and travel a lot. usually i do not need that much battery, so after a workday, i still have about 60%. however, if i plug it in, the batteries start to charge.
    is there an option that allows me to control, when the battery starts to charge? i know that there is already a limit around 90%. is there any way i can change this limit?

    thanks a lot!
  2. GGJstudios macrumors Westmere


    May 16, 2008
    No, if you plug in with a battery that's not fully charged, it will charge, as long as it's below around 93%. However, why would you want to prevent that? It's not a problem to recharge at any time. Mac batteries don't suffer from the "memory effect" of Ni-Cd batteries. It's fine to recharge them at any time. This should answer most, if not all, of your battery questions:
  3. dukebound85 macrumors P6


    Jul 17, 2005
    5045 feet above sea level
    DOn't batteries have a memory of a limit? As in if you never dip below a certain %, the battery somehow remembers that and adversly affects performance if you do did below?
  4. GGJstudios macrumors Westmere


    May 16, 2008
    No, that's only Ni-Cd batteries. The lithium polymer batteries used in Apple portables don't have memory effect.

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