You should perform this function when you first get the unit and every two or three months from then on. If you use the system mostly on AC, you may need to perform this monthly.
- Plug in the power adapter and fully charge you MacBook. Watching the indicator lights to make sure you have a full charge.
- Disconnect the AC power and use the MacBook till you receive the warning about the low battery.
- Continue to use the unit until the system until it goes to sleep.
- Connect the AC power adapter and fully recharge the battery again. This will calibrate the battery. One full charge discharge and full recharge will calibrate the battery.