BRTONG Laptop Battery For Apple MacBook Pro 13 Inch A1278 A1322 (Mid 2009, Mid 2010, Early and Late 2011, Mid 2012 Version) 020-6547-A 661-5229 661-5557 - 18 Months Warranty Compatible Models: Apple Macbook Pro 13 Inch battery for 2009 2010 2011 2012 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, MC374LL/A, MC375LL/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, MD101LL/A, MD102LL/A, MD313LL/A, MD314LL/A Compatible part number: 020-6547-A / 020-6765-A / 661-5229 / 661-5557 Battery type: Li-ion; Capacity: 6000mAh/65Wh; Cells: 6-cell; Voltage: 10.95V Operation time for standard batteries: Around 4 hours, the actual operation time will depend on how much electricity is required by the device and how you use it CE-/FCC-/RoHS-Certified for safety. 24 x 7 email support, 18-month hassle-free warranty