Superior Quality Replacement Battery for Select Apple Laptop / Notebook / Compatible with Apple A1369Macbook Air 13.3" A1369, Macbook Air 13.3" MC504, MC504LL-A, Macbook Air 13.3" MC503, MC503ZP-A, MC503LZ-A, MC503LL-A, MC503E-A, MC503B-A, A1369 ( 8 Cell, 50WH ) 18 Months Manufacturer Warranty, 100% Satisfaction Guaranteed. 100% Compatible Non-OEM : Lithium Ion (Li- ion) Long Life Battery: Rechargeable with No Memory Effect and Power Surge Protection. 50 Wh, 7.3 Volts & 8 Cell Protective Retail Packaging, Each Product is Sealed with Anti-Static Shield Sleeve. Exclusive Offering of High Performance, Long Lasting, and Durable Grade A Cell Battery Replacement Laptop Battery for Apple 1405 Non-OEM Battery Long Life, Li-ion Battery Rechargeable with No Memory Effect and Power Surge Protection. Exclusive Offering of High Performance, Long Lasting. Durable Grade A Cell Battery.