Egoway 7200mAh/79Wh Replacement Battery A1382 for Apple 15 inch MacBook Pro Core i7 (only for Early / Late 2011, Mid 2012) Battery type: rechargable Li-Polymer battery; Voltage:10.95V; Capacity: 7000mAh/76.7Wh; 6 Cell. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. About 600 recharge cycles over the life of the battery; CE-/FCC-/RoHS-Certified for safety. Operation time for standard batteries: Around 3 hours, the actual operation time will depend on how much electricity is required by the device and how you use it. Warranty: 18 Months warranty, 30 days money return guarantee, 24 x 7 email support.