1. Turn your Acer 5250-BZ853 laptop over.
2. Find the laptop battery release button lock for your Acer 5250-BZ853 laptop.
3. Now that your Acer 5250-BZ853 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 5250-BZ853 battery is removed, grab your replacement Acer 5250-BZ853 battery for installation.
6. Insert the battery into the slot. Push the Acer 5250-BZ853 battery towards the laptop and secure it in place.