DTK Upgraded Version Laptop Battery for Apple A1322 A1278 (2009 2010 2011 Version) Unibody MacBook Pro 13'', Fits Mb990/a Mb990ll/a Mb990j/a + 2PCS Screwdrivers Battery type: Li-Polymer; Capacity: 5000mAh/; Cells: 6-cell; Voltage: 11.1V. Compatible Models: 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 Compatible Part Numbers: 661-5229 661-5557 020-6547-A 020-6765-A A1322 A1278 (2009 2010 Early 2011 version) All DTK products are Certified by CE, FCC for safety. Strict guidelines for compatibility, and standards compliance for environment safety. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. 100% New from Manufacturer. Up to 500 recharge cycles over the life of the battery. Operation time for standard batteries(6-cell, 5000mah): Around 2 hours, however, the actual operation time will depend on how much electricity is required by the device and how you use it. 24 x 7 email support, 12-month hassle-free warranty. overheating protection overcurrent protection overvoltage protection overcharge protection over discharge protection short circuit protection