Leaving Macbook Pro Charging While in Use Most of the Day?

Discussion in 'MacBook Pro' started by DevAndy, Jul 19, 2014.

  1. DevAndy macrumors member


    Jul 4, 2014
    Is it bad for your battery to leave it charging at 100% while in use?

    What is the most optimal way to retain battery juice?
  2. jg321 macrumors 6502

    Aug 29, 2012
  3. T5BRICK macrumors G3


    Aug 3, 2006
    It's fine. Just make sure you complete at least 1 charge cycle per month. Remember that 1 charge cycle does not mean running it down to 0% and then re-charging back to 100%.
  4. DevAndy thread starter macrumors member


    Jul 4, 2014
    What does a recharge cycle mean? I usually leave it on 24/7, charging it when I get home and during the night, while using it on the Subway.
  5. joe-h2o macrumors 6502a

    Jun 24, 2012
    One cycle is a combined total of a full discharge and recharge. So it can be 100% > 0% > 100%, but that's the least healthy way to do it for long term battery condition.

    One cycle is also going from 100% > 50% > 100% twice, which is a much more gentle way to use the battery - lithium ion cells do not like being deep discharged.

    So, using the computer on battery and charging it up normally is usually more than adequate to maintain battery health.

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