Runpower Replacement Battery for MacBook Air 13" A466 (Late 2010 Mid 2011 Version) A1369 (Late 2010 Mid 2011 Version),Also fits A1377 A1405 1496[Li-Polymer 55Wh/7200mAh] Battery type: Li-Polymer; Capacity: 55Wh/7200mAh; Cells: 4-cell; Voltage: 7.6V Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability Worry-free, products are passed CE-/FCC-/RoHS-Certified for safety 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. Warranty: 12 months free warranty. 24 x 7 professional and efficient email support