PowerSmart 7.4V 5800mAh Replacement A1245 Battery for Apple MacBook Air 13" A1237, A1304, Z0FS This battery Compatible Part Numbers: A1245 Battery Type: Li-Polymer|| Voltage: 7.40V ||Capacity: 5800mAh ||Color: Black Dimension: 287.00 x 120.65 x 8.80 mm||Weight: 416.30 g||Rate: 43.00 Wh Product Type: Replacement Battery (Brand New) ||Condition: New, 1 year warranty! Please ensure the product(s) that you are going to buy fits the brand, model, part number and dimension (mentioned above) of your device.