Product UPC: 705105237015 PortaCell (8 Cells/Samsung cell, High Capacity 14.4V, 5200mAh/75Wh) Laptop Battery 92P1167, 40Y7001 for IBM / Lenovo ThinkPad X60 X60S X61 X61S.PortaCell uses Samsung cells runs longer time, meets or exceeds the original spec....