Description: Capacity: 4400 mAh;Voltage: 7.4V;Number of cells: 4;Cells technology: Li-Polymer;Warranty: 12 months;Cells manufacturer: Green Cell;Colour: Black;Overdischarge protection: Yes;Overcharge protection: Yes;Product code: AP09;Manufacturer: Green Cell;Size: 287x120x6mm;Weight: 270g;Model: MacBook Air 13" ;Compatibility list: ;Compatible with following battery models : A1245 ;Compatible with following devices : Apple MacBook Air