Go to Amazon Sites : br br CSE? Replacement Laptop Battery for Apple A1322 A1278 (2009 Version) Unibody MacBook Pro 13'' br br Battery type Li-Polymer Capacity 5800mAh635WH Cells 6-cell 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 support12-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 batteries6-cell 4400mah Around 2 hours the actual operation time will dep