Egoway Laptop Battery for Apple A1309 A1297 (only for Early 2009, Mid 2009, Mid 2010 Version), MacBook Pro 17" Precision Aluminum Unibody + Two Free Screwdrivers [Li-Polymer 7.4V 95Wh] NOTE: This model is a MacBook Pro 5,2 2009 Version and MacBook Pro 6,1 2010 Version A1297 battery, Not a MacBook Pro8,3 2011 Version A1297 battery; Battery Type: Li-Polymer; Voltage: 7.4V; Capacity: 95Wh/14000mAh; Cells: 9 Cell. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. Worry-free,100% New from Manufacturer, products are passed CE-/FCC-/RoHS-Certified for safety. Operation time: Around 3.5 hours, the actual operation time will depend on Operation time: Around 3.5 hours, the actual operation time will depend on how much electricity is required by the device and how you use it. Warranty: 18 months free warranty ,30 days money return guarantee. 24 x 7 professional and efficient email support.