Apple 661-5960 Battery, Lithium Ion, US / Canada - 17inch MacBook Pro Early Late 2011 - A1297. 661-5960 for A1297 i7 2.2GHz Early 2011, A1297 i7 2.3GHz Early 2011, A1297 i7 2.2GHz Late 2011, A1297 i7 2.3GHz Late 2011. Apple Batteries for MacBook Pro (17-inch Early 2011), MacBook Pro (17-inch Late 2011).