Safe to calibrate by draining battery for MBP 2011?

Discussion in 'MacBook Pro' started by egosumcarlo, May 31, 2011.

  1. egosumcarlo macrumors newbie

    Joined:
    Jan 3, 2011
    #1
    Good day. I'm using the early 2011 model of the Macbook Pro 15". I used to remember from using an older model that it is recommended to every now and then drain the battery completely until the MBP goes to sleep. So I followed the procedure outlined in http://support.apple.com/kb/HT1490. I used the MBP until it got to 0% and then after a few minutes, the display turned off. The "sleep" light only glowed once and then faded and never came back on or pulsated. Therefore, I could not tell if the procedure resulted in the MBP going to sleep or resulted in an unsafe, forced shutdown. I waited for a few seconds and then pressed the Power button. That brought up a gray version of the desktop with a counter at the bottom and when the counter was done, I was back at the desktop. There was not the usual Apple Logo that displays when the MBP is booted up.

    Can anyone confirm if what happened was a sleep or a forced shutdown?Is this procedure safe to perform?

    I did notice in http://support.apple.com/kb/HT1490, that the above calibration step is recommended for occasional execution on all MBP models minus a couple of ones from mid-2010 and mid-2009.
     
  2. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #2
    Yes, it's safe to let your MBP sleep or power off during calibration. It won't harm it at all. This should answer most, if not all, of your battery questions:
     

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