1. Turn your Sony VGN-FJ180PR laptop over.
2. Find the laptop battery release button lock for your Sony VGN-FJ180PR laptop.
3. Now that your Sony VGN-FJ180PR 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-FJ180PR battery is removed, grab your replacement Sony VGN-FJ180PR battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-FJ180PR battery towards the laptop and secure it in place.