1. Turn your Sony VPC-EB4BGX laptop over.
2. Find the laptop battery release button lock for your Sony VPC-EB4BGX laptop.
3. Now that your Sony VPC-EB4BGX 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 VPC-EB4BGX battery is removed, grab your replacement Sony VPC-EB4BGX battery for installation.
6. Insert the battery into the slot. Push the Sony VPC-EB4BGX battery towards the laptop and secure it in place.