A1932 MACBOOK AIR BATTERY REPLACEMENT: A1965 BATTERY SPECS: Capacity: 4800 mAh,55 Wh, Voltage: 11.4 V, Battery Type: Li-Polymer. Package included:one OEM battery for macbook air A1932 Battery A1965, two screwdrivers and one installation instructions XINGLT MACBOOK AIR A1932 BATTERY REPLACEMENT: New Upgraded 4.0, Japan Electric Core, Cobalt Proportion>98%, the higher the proportion of cobalt, the better the performance of the battery. UL-/CE-/FCC-/RoHS-Certified/PSE Report for safety