1. Turn your HP RE373EAR laptop over.
2. Find the laptop battery release button lock for your HP RE373EAR laptop.
3. Now that your HP RE373EAR 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 RE373EAR battery is removed, grab your replacement HP RE373EAR battery for installation.
6. Insert the battery into the slot. Push the HP RE373EAR battery towards the laptop and secure it in place.