LB1 High Performance New Battery for Asus S56C S46 S505 Ultrabook, Fits : A42-K56, A41-K56 A31-K56 Battery Type: Li-ion; Capacity: 2200mAh/33Wh; Cells: 4-cell; Voltage: 14.8V 100% Brand New from Manufacturer. Rechargeable Up to 500 times over life of battery. 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.