Macbook Pro
From Wikicliki
To calibrate your laptop’s battery:
1. Plug your laptop in and let it charge completely (your battery icon in the menu bar will be completely full and the charger’s connector light turns green). 2. Keep the laptop plugged in for another two hours (after it is fully charged). 3. Disconnect your laptop from power. Use it until it falls asleep from low battery. 4. Turn off the laptop and let it “rest” for about five hours. 5. Plug your laptop back in and let it fully charge.