Futurebatt&reg; Laptop Replacement Battery 5800mAh for Apple A1331 A1342 (Late 2009 Mid 2010) Unibody MacBook 13", Fits 661-5391 661-5585 MC207LL/A MC516LL/A - [Li-ion 10.95V/63.5WH] Specifications: 6 Cell, Li-ion battery, Rated at 10.95V 5800mAh CE-/RoHS-/FCC- Certified and Built-in circuit protection ensure both safety and stability. 100% Brand New from Manufacturer. Rechargeable Up to 600 times over life of battery Equipped with Higher Quality Cells yet has Same Size & Shape as an OEM Battery This Product has 12 Months Replacement Warranty! With Hassle-free Customer Service