1. Turn your HP zx5035ea laptop over.
2. Find the laptop battery release button lock for your HP zx5035ea laptop.
3. Now that your HP zx5035ea 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 zx5035ea battery is removed, grab your replacement HP zx5035ea battery for installation.
6. Insert the battery into the slot. Push the HP zx5035ea battery towards the laptop and secure it in place.