HASESS A1322 Battery Compatible for MacBook Pro 13 inch Battery Replacement A1322 A1278 Battery for MacBook Pro 13 Battery 2009 2010 2011 2012 with Two Screwdrivers 63.5Wh/6000mAh - 12 Months Warranty Battery type: Li-Polymer; Capacity: 63.5Wh/6000mAh; Cells: 6-cell; Voltage: 10.95V. High Performance Macbook Pro 13 inch Battery A1322 A1278, Up to 500 recharge cycles over the life of the battery Replacement for: Apple MacBook Pro 13.3" A1278 A1322(Mid 2009, Mid 2010, Early and Late 2011, Mid 2012 Version) 661-5229 661-5557 020-6547-A 020-6765-A. Certified safe by world-renowned third parties CE, FCC and RoHS Grade A Cell: Original A-level durable battery cells ensure fast charges and low power consumption; Built-in circuit protection ensures safety and stability with protection against macbook a1278 battery over charge and short circuit Please confirm that your laptop's model number correctly match our replacement A1322 battery. You can access this information on your computer by: About this Mac --&gt;More info... --&gt;Serial number--&gt;Check your laptop's version on Apple's offical website or Google the serial number What You Get - 1 x Replacement Macbook Pro Battery, 2 x Free Screwdrivers, HASESS Laptop Battery Warranty: 12 Months Warranty, 30 days money back guarantee. There are any questions, feel free to contact our customer support for assistance