Awaking from sleep - battery loss

Discussion in 'MacBook Pro' started by ajgrant, Mar 18, 2014.

  1. ajgrant macrumors member

    Jan 4, 2014
    I left my MBP in sleep mode with the lid shut for about 2 hours or so. Left it at 36%, when I opened it and started to use it again, it went down to 31% within a minute or two.

    Is this just the battery being slow to update, or could it suggest an issue?
  2. yjchua95 macrumors 604

    Apr 23, 2011
    GVA, KUL, MEL (current), ZQN
    It's normal. During sleep, the laptop will drain some battery to preserve the contents in the RAM.

    If it runs out of battery during sleep, the MBP will automatically write the RAM's contents into the hard drive before going into hibernate.

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