Laptop Battery for Apple A1322 A1278 Unibody Macbook Pro 13 Inch, also fits: 661-5557 661-5229 MB990ll/A MB991ll/A + Two Free Screwdrivers Battery type: rechargable Li-Polymer battery; Voltage:10.95V; Capacity: 6000mAh/65Wh; 6 Cell. Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and stability. About 500 recharge cycles over the life of the battery; CE-/FCC-/RoHS-Certified for safety. Operation time for standard batteries(eg, 4400mah): Around 2.5 hours, the actual operation time will depend on how much electricity is required by the device and how you use it. Warranty: 12 Months warranty, 30 days money return guarantee, 24 x 7 email support.