1. Turn your Sony 147964792 laptop over.
2. Find the laptop battery release button lock for your Sony 147964792 laptop.
3. Now that your Sony 147964792 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 Sony 147964792 battery is removed, grab your replacement Sony 147964792 battery for installation.
6. Insert the battery into the slot. Push the Sony 147964792 battery towards the laptop and secure it in place.