1.Grade A cell Li-ion battery 2.Rechargeable 3.Long lifespan 4.High quality low price best service 5.Six months warranty Description: 1) Battery type: Li-ion2) Voltage: 10.8 V 3) Capacity: 5500 mAh 4) Color: Tattletale gray 5) Models Compatible: APPLE 15"MacBook Pro6) Replacement Part Number: A1175,M6099,A1175, MA348G/A, MA463LL/A7)Condition Brand New