Puredick&reg; High Performance Laptop Battery for Apple A1321 A1286 (only for 2009 2010 Version) Unibody MacBook Pro 15'', fits MC118 MB985 MB986 MC371 MC372 MC373 + Two Free Screwdrivers - 18 Months Warranty [Li-Polymer 6-cell 10.95V 73Wh] Battery type: Li-Polymer; Capacity: 73Wh; Cells: 6-cell; Voltage: 10.95V. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. CE-/FCC-/RoHS certificated for safety,18 months warranty,professional technical support, efficient and always satisfied customer service 24 x 7 email support. Operation time:Same Battery life with Brand new original Apple battery. In reality, this will depend on the amount of electricity required by the device and how you use it