This is a black laptop battery unit with a voltage of 10.95V and a battery capacity of 77.5WH. It has 6 Li-Ion battery cells and is compatible with Apple MacBook Pro laptops from early 2011 to mid 2012. The battery model numbers it is compatible with are A1382 and A1286, and the part numbers are 020-7134-A, 661-5211, 661-5476, and 661-5844. It is manufactured in China and is sold as a single unit. Exact item is shown. New in original sealed inner packaging. Includes the installation tools pictured. Made in China. No returns if installed. This item is a new, opened customer return. It has been inspected and passed quality control to insure the condition described and contents are accurate. Please review actual photos as stock photos are not the actual item, our photos are. You will ONLY receive exactly what is shown in photos, regardless of what might have originally been included. Please review our business policies in our store for information regarding returns, shipping and warranties.