1. Turn your Gateway 450ROG laptop over.
2. Find the laptop battery release button lock for your Gateway 450ROG laptop.
3. Now that your Gateway 450ROG 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 450ROG battery is removed, grab your replacement Gateway 450ROG battery for installation.
6. Insert the battery into the slot. Push the Gateway 450ROG battery towards the laptop and secure it in place.