MacBook Pro (15-inch, 2.53GHz, Mid 2009) battery replacement
New Laptop Replacement Battery for A1278 A1322 Mac Book Pro 13 inch (2009 2010 2011 2012 Version) Series, fit MB990LL/A MB991LL/A MC374LL/A MC375LL/A [10.95V 63.5Wh ] - Walmart.com
New Laptop Battery Replace for MacBook Pro 13'' A1278 (Mid 2009, Mid 2010, Early 2011, Late 2011, Mid 2012) Series, fit MB990LL/A MB991LL/A MC375LL/A MD314LL/A MC724LL/A - Newegg.com
Battery For Apple MacBook Pro 13 inch A1278 A1322 Mid 2009 2010 Early 2011-2012 | eBay