LB1 High Performance Laptop Battery for IBM Lenovo ThinkPad X200 Tablet Thinkpad X201 P/N: 43R9256 43R9257 Fru 42T4657 42T4658 ASM 42T4565 Battery Type: Li-ion; Capacity: 4000mAh/58Wh; Cells: 8-cell; Voltage: 14.4V 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 power consumption of equipment, configuration 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.