Tech Specs Compatible 10.8V 4600mAh Original Model Numbers 41U3196, 41U3197, 41U3198, 41U3199, 42T4530, 42T4532, 42T4547, 42T4552, 42T4652, 42T5225, 42T5226, 42T5227, 42T5228, 42T5229, 42T5262, 42T5263, 42T5264, 43R4299, 45J7968, 45J7969, ASM 42T5265, FRU 42T4548, FRU 42T5262, FRU 42T5264, IBMT61BAT-11, FRU 42T4677, FRU 42T4678, FRU 42T4743, FRU 42T4745, FRU 42T4771, ASM 42T4547, ASM 42T5226, ASM 42T5228, FRU 42T4552, FRU 42T4652, FRU 42T4667, FRU 42T4668, FRU 42T5225, FRU 42T5227 Suitable Models Lenovo ThinkPad R400, R400 7443, T400, T400 2764, T400 2765, T400 6473, T400 7417, R61 (14.1? widescreen), R61 7732, R61 7733, R61 7734, R61 7735, R61 7736, R61 7737, R61 7738, R61 7742, R61 7743, R61 7744, R61 7751, R61 7753, R61 7754, R61 7755, R61i (14.1? widescreen), R61i 7732, R61i 7742, T61 (14.1? widescreen), T61 1959, T61 6377, T61 6378, T61 6379, T61 6480, T61 6481, T61 7658, T61 7659, T61 7660, T61 7661, T61 7662, T61 7663, T61 7664, T61 7665, T61p (14.1? widescreen), T61u (14.1" widescreen) What's in the box 1 X Battery