1. Turn your Gateway NV48 laptop over.
2. Find the laptop battery release button lock for your Gateway NV48 laptop.
3. Now that your Gateway NV48 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 Gateway NV48 battery is removed, grab your replacement Gateway NV48 battery for installation.
6. Insert the battery into the slot. Push the Gateway NV48 battery towards the laptop and secure it in place.