BRTONG 95Wh Laptop Battery for Apple MacBook Pro 15" A1494 A1398 Retina (Late 2013 and Mid 2014) ME293 ME294 with Screwdrivers [Li-Polymer 11.26V 95Wh/8440mAh] Battery Type: Li-Polymer; Voltage: 11.26V; Capacity: 95Wh 8440mAh; 6 Cell Compatible Models: Me293 Me294 A1398 A1494 Compatible part number: MD831LL/A MC975LL/A MC976LL/A ME665LL/A ME664LL/A Operation time for standard batteries: Around 4-5 hours, the actual operation time will depend on how much electricity is required by the device and how you use it Overcharger and Discharger Circuit Protection, CE-/FCC-/RoHS-Certified for safety, About 500 recharge cycles over the life of the battery. 24 x 7 email support, 18-month hassle-free warranty