ANTIEE Compatible A1322 Laptop Battery for Apple MacBook Pro 13 inch A1278 (Mid 2012 Early 2011 Late 2011 Mid 2010 2009) fits MB990LL/A MB991ll/A MC374ll/A MC375LL/A MC700ll/A MD101LL/A MD102LL/A ANTIEE Promise: Each products has undergone rigorous testing to ensure the correct voltage, circuit protection, capacity, stable current, low self-discharge and guaranteed battery life. Specification: Voltage: 10.95V. Capacity: 63.5Wh. Battery Type: li-ion polymer. Condition: Brand New. Fully compatible with the originals and more than 500 recharge cycles over the life. Compatibility: Fit for 13" A1322 A1278 (Mid 2009, 2010, 2012, Early 2011, Late 2011). Compatible P/N: MB990*/A, MB991*/A, MC700, MC724, 661-5229, 661-5557, 020-6764-A, 3ICP5/69/71-2. Expected Run Time: 2.5-5 hours. It depends on the device type, electricity and the way it is used. Grade A cells and PCB ensure fast charges, low power consumption and stable performance. Guarantee Return Policy: Repair or replace during the first year. If for whatever reason you are not fully satisfied, please feel free to contact us directly and we'll take actions actively to resolve.