LB1 High Performance Battery for HP Compaq Business Notebook NX7400 Laptop Notebook Computer PC [8-Cell 14.8V] (Black) Battery Type: Li-ion; Capacity: 4400mAh/65Wh; Cells: 8-cells; Voltage: 14.8V. Premium Grade A cells ensures peak performance and reliability. Operation time depends on the capacity of the battery, laptop settings, power consumption of equipment, and how you use it. CE-/RoHS-/FCC- Certified and Built-in circuit protection ensure both safety and stability. Live Support Mon-Fri 4am-8pm PST | Sat-Sun 8am-5pm PST | 18 Months Hassle-Free Warranty. Compatible with: HP NX7400