GreenBox Innovations New Laptop Battery for Apple A1321 A1286 (Mid 2009, Mid 2010 Version) Unibody MacBook Pro 15 inch, fits MC118LL/A MC373LL/A MB986LL/A - 12 Month Warranty [Li-Polymer 6-cell 66Wh] Battery type: Li-Polymer; Capacity: 66Wh; Cells: 6-cell; Voltage: 10.95V. Quality: Grade A cells ensure fast charges and low power consumption. Protection: Built-in circuit protection, overcharge protection, over voltage protection ensures both safety and stability. Safety: Worry-free, products are passed CE-/FCC-/RoHS-Certified. Origin: 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery.