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I've been advised in a lot of places (for example: https://www.lifewire.com/calibrate-macbook-air-battery-2260856) to calibrate my Macbook Air's battery from time to time: every three months or so, keep it running until the battery dies, then turn it off and charge it completely again. This allows the battery to give you more accurate readings of the power left.

But it has just occurred to me: when doing this, am I supposed to keep the computer running all the time? Or can I close the lid and let it sleep (without plugging it in) for some of that time? After all, it's kind of hard to keep the Macbook on for 11 hours...

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It doesn't matter how the battery runs down; there's no difference whatsoever in the battery (or the computer) when your battery is depleted when the computer is running or when it's asleep. The battery's charge level will fall below the voltage necessary to power on your laptop - one way is just faster than the other. So, bottom line is that either way is fine - which ever you are comfortable with.

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  • True. Things self calibrate so well now, there’s no real hokey-pokey to perform than sometimes top off the charge and sometimes let it drop to the point the Mac sleeps itself. Like once every six months or so for each... (p.s. I was kind of hoping you would just leave the one opening sentence.)
    – bmike ♦
    Commented Sep 11, 2020 at 0:06
  • Sentence or paragraph @bmike
    – Allan
    Commented Sep 11, 2020 at 0:10
  • Eight words and a period :)
    – bmike ♦
    Commented Sep 11, 2020 at 0:14

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