1. Turn your Sony VGN-FW290JTB laptop over.
2. Find the laptop battery release button lock for your Sony VGN-FW290JTB laptop.
3. Now that your Sony VGN-FW290JTB 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-FW290JTB battery is removed, grab your replacement Sony VGN-FW290JTB battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-FW290JTB battery towards the laptop and secure it in place.