HP GJ114AA HDX 9000 Notebook 9 Cell Battery. Want maximum battery life so you, friends, and family can keep playing games, watching videos, listening to music, or viewing photo slide shows without having to plug in your AC adapter. With your HP notebook PCs Smart Lithium Ion battery, which works with the notebooks power management features to reduce power consumption, you will be able to work longer than with other types of batteries plus, the battery charges completely even if it isn¿t fully discharged.