Extended Performance Replacement Battery for select APPLE A1322, MacBook Pro 13" A1278 (2009 Version), MB990*/A, MB990CH/A, MB990J/A, MB990LL/A, MB990TA/A, MB990ZP/A, MB991*/A, MB991CH/A, MB991J/A, MB991LL/A, MB991TA/A, MB991ZP/A, Precision Aluminum Unibody (2009 Version), A1322 ( 4200 mAh )