Lenmar No Memory Lithium-Ion Notebook Computer Battery, 14.8V 4000mAh, for Hewlett Packard Pavilion ZE 4000 and ZE 5000 Series, Business Notebook NX9000 Series and OmniBook XE4000.

• Wouldn't you like to not worry about your notebook computer losing power all-of-a-sudden? No memory means no worry about having to watch your notebook unexpectedly lose power. Our long-lasting NoMEM Lithium-Ion and Nickel-Metal Hydride notebook computer batteries are your most reliable portable power source, providing performance equal to or better than the original manufacturer's batteries. Having been rigorously tested, Lenmar notebook batteries continue to be the leader in reliability and compatibility.