1. Turn your Sony VGN-NR160NS laptop over.
2. Find the laptop battery release button lock for your Sony VGN-NR160NS laptop.
3. Now that your Sony VGN-NR160NS 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-NR160NS battery is removed, grab your replacement Sony VGN-NR160NS battery for installation.
6. Insert the battery into the slot. Push the Sony VGN-NR160NS battery towards the laptop and secure it in place.