Batterymarket&reg; Laptop Battery for Apple A1322 A1278 (Mid 2009, Mid 2010, Early 2011, Late 2011, Mid 2012 Version) Unibody MacBook Pro 13", fits 661-5557 MB990LL/A MC724LL/A [Li-Polymer 63.5Wh] Battery Type: Li-Polymer; Voltage:10.95V; Capacity: 63.5Wh , 6000mAh FIT MODEL: Macbook Pro A1278 MD101 MD101LL/A MD102 MD102LL/A MC700LL/A MB990 MB990LL/A MB991LL/A MC374 MC375 MC724LL/A MD314 MD313LL/A Package included:1 X A1322 Laptop Battery, Two Free Screwdrivers. 100% New from Manufacturer. Up to 600 recharge cycles over the life of the battery. 12Months warranty ; 30Days money retum guarantee ; 24 x 7 email support