Egoway New Laptop Battery for Apple A1331 A1342 (Late 2009, Mid 2010 Version) Unibody MacBook 13" fits MC207LL/A MC516LL/A [Li-Polymer 10.95V 63.5Wh] Battery Type: Li-Polymer; Voltage: 10.95V; Capacity: 63.5Wh/5800mAh; 6 Cell. High Performance 5800mAh A1331 A1342 Replacement Battery. 100% New, 100% OEM Compatible; CE FCC Certified for safety. All battery were tested and proven to match and/or exceed original specifications of products. Warranty: 1 year warranty, 30 days money return guarantee, 24 x 7 email support.