#Replacement mac air battery how to
Here’s how to recalibrate your MacBook’s battery: Recalibrating the battery basically means discharging it completely and then recharging it completely.īattery recalibration takes a day or so, so if possible, do it over a weekend when you don’t have to have your MacBook for work.
The next thing to try is recalibrating the battery. If a transient issue in the SMC was causing the Service Battery warning, this should address it. SMC controls the computer fans, backlights, and indicator lights, as well as some aspects of the display, ports, and battery, so resetting it will force your MacBook to revert back to its default settings for all these things.
#Replacement mac air battery full
Apple states that its new batteries are designed to support 1,000 full charge-discharge cycles, after which the battery should still have 80% or more of its original capacity.