1. Turn your Apple MB134X laptop over.
2. Find the laptop battery release button lock for your Apple MB134X laptop.
3. Now that your Apple MB134X laptop battery is unlocked, find the battery release button down.
4. Holding the laptop battery release button, gently pull your battery away from the laptop.
5. Now that your Apple MB134X battery is removed, grab your replacement Apple MB134X battery for installation.
6. Insert the battery into the slot. Push the Apple MB134X battery towards the laptop and secure it in place.