How do I replace the battery in my HP 15 Notebook PC?

To remove and install a battery: Turn off your computer, disconnect all external devices, and unplug the power cord. Then turn the laptop upside down on a flat surface, slide the release latch located at the bottom to unlock the battery, and lift it out using two fingers in the center of the battery. Ensure compatibility before inserting by sliding the new battery straight in until it clicks into place.