1. Turn your Sony VGN-CS180JR laptop over.
2. Find the laptop battery release button lock for your Sony VGN-CS180JR laptop.
3. Now that your Sony VGN-CS180JR 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-CS180JR battery is removed, grab your replacement Sony VGN-CS180JR battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-CS180JR battery towards the laptop and secure it in place.