1. Turn your Gateway T-1603m laptop over.
2. Find the laptop battery release button lock for your Gateway T-1603m laptop.
3. Now that your Gateway T-1603m 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 T-1603m battery is removed, grab your replacement Gateway T-1603m battery for installation.
6. Insert the battery into the slot. Push the Gateway T-1603m battery towards the laptop and secure it in place.