Upgrade chip to ensures fast charges and low power consumption --
Voltage: 10.95V;
Capacity: 77.5W h.
Weight: 368g.
Please note: This is A1382 battery and DO NOT fit for MID 2009, EARLY 2010, LATE2010 (A1286) ^^ Replacement A1382 Battery for MacBook Pro 15 inch [A1286 Core i7 versions] - (Early 2011 versions, Late 2011 versions, Mid 2012) MC721LL/A, MC723LL/A, MD035LL/A, MD318LL/A, MD322LL/A, MD103LL/A, MD104LL/A, BTO/CTO ^^ Easy to install. There are 2 screwdrivers in the package. Enough to install the new battery for your MacBook. ^^ Built-in circuit protection ensures both safety and stability. Over charger circuit protection.