1. Turn your Gateway M7315u laptop over.
2. Find the laptop battery release button lock for your Gateway M7315u laptop.
3. Now that your Gateway M7315u 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 M7315u battery is removed, grab your replacement Gateway M7315u battery for installation.
6. Insert the battery into the slot. Push the Gateway M7315u battery towards the laptop and secure it in place.