1. Turn your HP xh635 laptop over.
2. Find the laptop battery release button lock for your HP xh635 laptop.
3. Now that your HP xh635 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 HP xh635 battery is removed, grab your replacement HP xh635 battery for installation.
6. Insert the battery into the slot. Push the HP xh635 battery towards the laptop and secure it in place.