LB1 High Performance Battery for Asus A52J, Part #: A31-K52, A32-K52, A41-K52, A42-K52, A31-B53, K52L681, A41-K56, A42-K56 Laptop Notebook [8 Cells 4400mAh 14.4V] Battery Type: Li-ion; Capacity: 4400mAh/63Wh; Cells: 8-cell; Voltage: 14.8 V 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. Battery for Asus A52J, Part #: A31-K52, A32-K52, A41-K52, A42-K52, A31-B53, K52L681, A41-K56, A42-K56