1. Turn your Sony VGN-NR498E laptop over.
2. Find the laptop battery release button lock for your Sony VGN-NR498E laptop.
3. Now that your Sony VGN-NR498E 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 VGN-NR498E battery is removed, grab your replacement Sony VGN-NR498E battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-NR498E battery towards the laptop and secure it in place.