1. Turn your Acer 5920-5A2G12Mi laptop over.
2. Find the laptop battery release button lock for your Acer 5920-5A2G12Mi laptop.
3. Now that your Acer 5920-5A2G12Mi 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 5920-5A2G12Mi battery is removed, grab your replacement Acer 5920-5A2G12Mi battery for installation.
6. Insert the battery into the slot. Push the Acer 5920-5A2G12Mi battery towards the laptop and secure it in place.