1. Turn your IBM 0660 laptop over.
2. Find the laptop battery release button lock for your IBM 0660 laptop.
3. Now that your IBM 0660 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 IBM 0660 battery is removed, grab your replacement IBM 0660 battery for installation.
6. Insert the battery into the slot. Push the IBM 0660 battery towards the laptop and secure it in place.