1. Turn your Acer TM4222WLMi laptop over.
2. Find the laptop battery release button lock for your Acer TM4222WLMi laptop.
3. Now that your Acer TM4222WLMi 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 TM4222WLMi battery is removed, grab your replacement Acer TM4222WLMi battery for installation.
6. Insert the battery into the slot. Push the Acer TM4222WLMi battery towards the laptop and secure it in place.