CSEXCEL High Performance Battery for Apple MacBook Pro 17 inch Core i7 A1383 A1297 (Only for 2011 Version), Also fits: 020-7149-A 020-7149-A10-18 Months Warranty [Li-Polymer 10.95V 95Wh/8700mAh] Battery type: Li-Polymer; Capacity: 8700mAh/95Wh; Voltage: 10.95V, 9-cells 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. CE-/FCC-/RoHS-Certified for safety. 24 x 7 email support,12-month hassle-free warranty. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Operation time: the actual operation time will depend on how much electricity is required by the device and how you use it.