In this guide, we show you how that process works.
Allow the MacBook to discharge completely and power off.
Then, plug in the power cable and charge the battery to 100 percent.
During this time, macOS automatically calibrates the battery.
Don’t go by the battery menu.
Once the battery is fully charged, continue to run your Mac from the AC adapter for two hours.
After two hours, unplug the AC power adapter from your Mac.
Don’t turn your Mac off.
The equipment transitions to battery power without any trouble.
Continue to execute the Mac from the battery until the on-screen low-battery warning dialog appears.
While you wait for the low battery warning, continue to use your Mac.
Don’t perform any critical work after you see the low-battery warning.
The Mac will go to sleep before long and with no other warning.
Once your Mac goes to sleep, turn it off.
The battery is now fully calibrated, and the internal battery processor will deliver accurate battery-time-remaining estimates.
However, after the battery is calibrated, its remaining time indicator is more accurate.
Over time, as the battery accumulates charges and discharges, its performance changes.
The appropriate time between calibrations depends on how often you use your Mac.
Tips for Optimizing Battery Usage
There are plenty of ways to reduce battery usage on your Mac.
Some are obvious, such as dimming the brightness of the display.
The brighter the display, the more energy it uses.
you’re free to use thedisplay preference paneto adjust display brightness.
Turn off Wi-Fi capabilities from the Wi-Fi menu bar icon or the web connection preference pane.
Disconnect peripherals, including any attached memory cards.
you’re able to access this option inSystem Preferences>Battery.
