1. Turn your Acer 8920 laptop over.
2. Find the laptop battery release button lock for your Acer 8920 laptop.
3. Now that your Acer 8920 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 Acer 8920 battery is removed, grab your replacement Acer 8920 battery for installation.
6. Insert the battery into the slot. Push the Acer 8920 battery towards the laptop and secure it in place.