1. Turn your HP dv5125eu laptop over.
2. Find the laptop battery release button lock for your HP dv5125eu laptop.
3. Now that your HP dv5125eu 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 dv5125eu battery is removed, grab your replacement HP dv5125eu battery for installation.
6. Insert the battery into the slot. Push the HP dv5125eu battery towards the laptop and secure it in place.