OK to leave power adapter in MBP all the time?

Discussion in 'MacBook Pro' started by milky23, Jun 22, 2007.

  1. milky23 macrumors regular

    Oct 23, 2005
    Hi there, I'm new to laptops. Is it alright to leave the magsafe adapter plugged in all the time? i never have any real need to run this thing on battery.
  2. 66217 Guest

    Jan 30, 2006
    No problem at all.:)

    Nonetheless, it is recommended to calibrate it once a month.
  3. Fearless Leader macrumors 68020

    Mar 21, 2006
    it's fine, it's smart about taking care of the battery. But if you dont need the battery for a long time, say a month or more, you should power it down to 50% and pop it out.

    one little thing you might be concerned with though, My processor speeds cut in half when I don't have a battery in.

    also go ahead and cycle the battery atleast once a month. as in full drain and full charge as back to back.
  4. milky23 thread starter macrumors regular

    Oct 23, 2005
    Rokem, when you take your battery out, your performance is cut in half? Which MBP do you have?

    My performance drops when I'm running ON the battery, but when the power adapter is in, its fast. Strange.
  5. Sopranino macrumors 6502

    Sep 27, 2006
    Alberta, Canada
    For both Rokem and Milky23

    OSX has a setting available through either the battery icon in the menu bar, or you can access a more detailed version through System Preferences/Energy Saver.

    The settings have default presets that change the system behavior from Better Performance, when plugged in, to Better Energy Savings when running on battery. These defaults can be adjusted from within the System Preferences/Energy Saver so that they automatically set the system the way you want it whenever your power source changes state. If you just want to change it quickly without setting anything in preferences then simply click on the battery icon in the meny bar and then select whichever option you want from the drop down menu.

  6. eenu macrumors 65816


    Aug 11, 2006
    Manchester, UK
    yes when you take the battery out the processor performance is cut in half..... no idea why it does that
  7. Habusho macrumors 6502

    Aug 12, 2006
    Yeah I didn't believe it either until I read the document from Apple. The CPUs use one core or something because the battery acts as a buffer between the electricity and the CPU.
  8. aquajet macrumors 68020

    Feb 12, 2005
    Every new laptop user should read this about their computer and its battery. :)

    Here is info about running a MB/MBP without the battery installed.
  9. mike dunx macrumors regular

    Oct 15, 2006
    Central FL
    nice avatar....
  10. looking4anotebo macrumors 6502

    Jul 9, 2007
    When I get my MBP I planned on having it on the power adapter with no battery in most of the time, running through an APC battery backup.

    This makes little sense to me that the processor throttles down that much with no battery in. I don't think I have heard of any other notebooks doing this.


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