This battery is compatible with Apple MacBook Air 13'' laptops and has been previously used. Please refer to the pictures provided for more information on the appearance of the battery. It is an AC & DC type battery with a black colour. The brand of the battery is Apple, making it a reliable and compatible choice for your laptop. This battery is perfect for those looking to replace their old or damaged battery. It is suitable for use with MacBook Air 13'' laptops and has been fully tested and is guaranteed to work. The battery is in great condition, however, please note that it has been previously used.