Review Apple MacBook Pro 13 Early 2011 (2.3 GHz dual-core, glare-type screen) - NotebookCheck.net Reviews
Would the battery from a 13" MacBook Pro (2010) work in a 15" MacBook Pro 2011? - Ask Different
Battery Life - The MacBook Pro Review (13 & 15-inch): 2011 Brings Sandy Bridge
MacBook Pro 13" A1322 battery for Apple A1278 (2009-2012)
11.1v 66.6wh A1322 A1278 Laptop Replacement Battery Manufacturer For Apple Macbook Pro 13 Inch - Buy Laptop Replacement Battery,Laptop Battery For Apple,Laptop Battery Manufacturer Product on Alibaba.com