Specifications:
Battery type: Li-ion; Cells: 6 cells; Voltage and Capacity: 6000mAh 10.95V 63.5Wh ( 11.V 66.6Wh Also Compatible ). 100% brand new.

Compatible Part Numbers:
661-5229, 661-5557, 020-6547-A, 020-6764-A,020-6765-A, A1322, A1278 ( 2009 2010 Early 2011 version )

NOTE: This battery only works for laptops manufactured in 2009 2010 2011 2012, NOT works for laptops made in 2008 ( such as A1278 made in 2008 ).

Compatible Models:
All Mid 2009 13" Unibody MacBook Pros
All Mid 2010 13" Unibody MacBook Pros
All Early 2011 13" Unibody MacBook Pros
All Late 2011 13" Unibody MacBook Pros
All Mid 2012 13" Unibody MacBook Pros

MacBook Pro 13-inch Mid 2009 Version:
- ( MB990LL/A, A1278, MacBookPro5,5 ) - Mid 2009 version
- ( MB991LL/A, A1278, MacBookPro5,5 ) - Mid 2009 version

MacBook Pro 13-inch Mid 2010 Version:
- ( MC374LL/A, A1278, MacBookPro7,1 ) - only for Mid 2010 version
- ( MC375LL/A, A1278, MacBookPro7,1 ) - only for Mid 2010 version

MacBook Pro 13-inch Early 2011 Version:
- ( MC700LL/A, MC724LL/A, MacBookPro8,1 ) - Early 2011 version
MacBook Pro 13-inch Late 2011 Version:
- ( MD314LL/A, MD313LL/A, MacBookPro8,1 ) - Late 2011 version

MacBook Pro 13-inch, Mid 2012 Version:
- ( MD101LL/A, MD102LL/A, MacBookPro9,2 ) - Mid 2012 version

Apple MacBook Pro 13-inch:
MB990*/A, MB990CH/A, MB990J/A, MB990LL/A, MB990TA/A, MB990ZP/A,
MB991*/A, MB991CH/A, MB991J/A, MB991LL/A, MB991TA/A, MB991ZP/A,
MC700, MC700B/A, MC700E/A, MC700J/A, MC700LL/A, MC700TA/A, MC700X/A,
MC700ZP/A, MC724, MC724B/A, MC724E/A, MC724J/A, MC724LL/A, MC724TA/A, MC724X/A, MC724ZP/A, MD313LL/A