Amsahr&reg; Extended Performance Replacement Battery for Lenovo E430, V480, V480C, V480S, V480U, V580, V580C, Y480, Y480A-ISE, Y480M-IFI, Y480P, Y580, Y580A, Y580M, Y580N, Y580P, ThinkPad Edge E430, E430c, E435, E530, E530c, E535, ASM 45N1048, FRU 45N1049, L11L6F01, L11L6R01, L11L6Y01, L11M6Y01, L11N6R01, L11N6Y01, L11P6R01, L11S6F01, L11S6Y0 (6 Cell, 4400 mAh)