1. Turn your Compaq X1425AP laptop over.
2. Find the laptop battery release button lock for your Compaq X1425AP laptop.
3. Now that your Compaq X1425AP 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 Compaq X1425AP battery is removed, grab your replacement Compaq X1425AP battery for installation.
6. Insert the battery into the slot. Push the Compaq X1425AP battery towards the laptop and secure it in place.