How to Calibrate your Mac battery

Calibrating your Mac battery may resolve issues with the computer incorrectly detecting the status of the battery.

  1. Connect the charger to your Mac until it is fully charged.
  2. Once fully charged, leave it plugged in for 2 hours.
  3. Disconnect the charger and leave the computer running to drain the battery.
  4. When the battery is low enough, the computer will go into sleep mode. Either leave it sleeping for at least 5 hours or wake it up and Shutdown.
  5. Connect the charger again until it is fully charged.

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