1. Turn your Sony VGN-NR180NS laptop over.
2. Find the laptop battery release button lock for your Sony VGN-NR180NS laptop.
3. Now that your Sony VGN-NR180NS 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-NR180NS battery is removed, grab your replacement Sony VGN-NR180NS battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-NR180NS battery towards the laptop and secure it in place.