The goal here is to drain the battery as much as possible, so once the low-power sleep mode kicks in, wait another couple hours for the last of the charge to drain (longer is better). Apple laptops go into a power-saving sleep when the battery gets low in an attempt to save your work. Wait two or three more hours for the battery to completely die.If you need a quick, low-maintenance way to drain the battery, try streaming a video with the screen brightness all the way up. Make sure you save your work once it hits 10% or so-it will most likely go into low-power sleep without warning. Use your laptop until the battery completely dies.You can keep using it during this step as well, just make sure that the power source is Power Adapter (you can check the power source by clicking the battery icon in the menu bar). Once the laptop hits 100%, keep it plugged in for an additional two hours. Keep the laptop plugged in for two more hours.It’s okay to use the laptop during this step. Plug the laptop in and charge it to 100%.
To calibrate your Apple laptop battery, follow these steps: Battery calibration is a recommended step for all newly installed batteries, but can occasionally smooth out issues with older batteries as well. If you recently installed a new battery in your laptop, you may be experiencing erratic battery behavior because the new battery needs to be calibrated.
