1. Turn your Sony VGN-FW248 laptop over.
2. Find the laptop battery release button lock for your Sony VGN-FW248 laptop.
3. Now that your Sony VGN-FW248 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-FW248 battery is removed, grab your replacement Sony VGN-FW248 battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-FW248 battery towards the laptop and secure it in place.