Go to Amazon.com : http://www.amazon.com/gp/product/B00LTOES2W?tag=theatrecat-20 <br /> <br />Goingpower Battery for Apple MacBook Pro13 A1322 A1278(2009 Version) MB990 MC700 MC374LL/A <br /> <br />Battery type Li-ion Capacity 635Wh Voltage 1095V <br />100 New from Manufacturer Up to 500 recharge cycles over the life of the battery <br />CE-FCC-RoHS-Certified for safety 24 x 7 email support 8-hr x 5-weekday call support 18-month hassle-free warranty <br />Grade A cells ensure fast charges and low power consumption Built-in circuit protection ensures both safety and stability <br />Operation time for standard battery6-cell 4400mah 2-3 hours for extended battery12-cell 8800mah over 4 hours Note The actual operation time depends on how much electricity is required by the device and how you use the battery
