1. Turn your Gateway M685-E laptop over.
2. Find the laptop battery release button lock for your Gateway M685-E laptop.
3. Now that your Gateway M685-E 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 M685-E battery is removed, grab your replacement Gateway M685-E battery for installation.
6. Insert the battery into the slot. Push the Gateway M685-E battery towards the laptop and secure it in place.