Replacement Battery Model A1377 A1405 A1496 Specification: Battery Type: Li-Polymer; Voltage: 7.6V, capacity: 55WH, 7200mAh, 4 cells. It is compatible with the MacBook Air 13'' A1466 (Mid 2012/2013, Early 2014/2015, 2017), A1369 (Late 2010, Mid 2011), EMC 3178 2925 2632 2469 2392 2559. For Macbook Air 13'' Configuration Type: MC503LL/A, MC504LL/A, MC965LL/A, MC966LL/A, MD231LL/A, MD232LL/A, MD760LL/A, MD761LL/A, MD760LL/B, MD761LL/B, MJVE2LL/A, MJVG2LL/A, MQD32xx/A, MQD42xx/A, MQD52xx/A. Upgraded High-Performance Protection Chip and Multi-protection Battery: This replacement battery for the 13-inch MacBook Air features a Japanese upgraded high-performance protection chip, with a cobalt content 98%, and intelligent temperature control, which extends the battery's lifespan. This A1405 A1377 A1496 replacement battery built-in multi-protection system, short circuit protection, overheat protection, and overcharge protection, etc. 500+ Charging Cycles and St