1. Turn your Acer PK130C91100 laptop over.
2. Find the laptop battery release button lock for your Acer PK130C91100 laptop.
3. Now that your Acer PK130C91100 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 PK130C91100 battery is removed, grab your replacement Acer PK130C91100 battery for installation.
6. Insert the battery into the slot. Push the Acer PK130C91100 battery towards the laptop and secure it in place.