TGF&reg; 7.3V 50Wh Laptop Battery for Apple MacBook Air 13" A1405 A1377 A1496, fits A1369 (Mid 2010, Mid 2011 version) A1466 (Mid 2012, Mid 2013, Early 2014 Version) 661-6055 MC503 MC504 Battery Type: Li-Polymer; Voltage:7.3V; Capacity: 50Wh 6800mAh; 4 Cell. 100% New from Manufacturer, High Performance A1405 Replacement Battery CE-/FCC-/RoHS-Certified. Tested under strict quality control standards, strict guidelines for compatibility Warranty: 12 Months warranty, 30 days money return guarantee.