LB1 High Performance Battery for Apple MacBook Pro Unibody 15 inch A1286 [Early 2011 to Mid 2012] Laptop Notebook Mac [9-Cell Li-ion 10.95V 7100mAh] 18 Months Warranty Battery Type: Li-Polymer; Capacity: 7100mAh/77.5Wh; Cells: 9-cell; Voltage: 10.95V 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.