LB1 High Performance Replacement Battery for Apple MacBook Air 13-Inch A1405, MC503, MC504 (Model Year: 2010/2015) Laptop Notebook [7200mAh 7.3V 60Whr Li-ion] Battery Type: Li-Polymer; Capacity: 7200mAh/52Wh; Cells:6-cell; Voltage: 7.6V Premium Grade A cells ensures peak performance and reliability. Operation time depends on the capacity of the battery, laptop settings, power consumption of equipment, and how you use it. CE-/RoHS-/FCC- Certified and Built-in circuit protection ensure both safety and stability. Live Support Mon-Fri 4am-8pm PST | Sat-Sun 8am-5pm PST | 18 Months Hassle-Free Warranty. Compatible with: Apple MacBook Air 13-Inch A1405, MC503, MC504 (Model Year: 2010/2015)