1. Turn your Gateway M-16 laptop over.
2. Find the laptop battery release button lock for your Gateway M-16 laptop.
3. Now that your Gateway M-16 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 M-16 battery is removed, grab your replacement Gateway M-16 battery for installation.
6. Insert the battery into the slot. Push the Gateway M-16 battery towards the laptop and secure it in place.