IBM Thinkpad X40 X41 EXTENDED 4400mAh - Replacement Notebook Battery FOR LAPTOP BATTERIES: 92P0999 92P1000 92P1009 92P1078 FRU 92P0998 FRU 92P1143 FRU 92P1145 FRU 92P1147 LB0039 CS-IBX40xL FOR Portable computer / Laptop Thinkpad X40, X41 Series (machine type:2371/ 2372/ 2382/ 2386) ThinkPad X41, ThinkPad X41 1865, ThinkPad X41 2525, ThinkPad X41 2526 ThinkPad X41 2527, ThinkPad X41 2528 Type: Li-on Voltage: 14.4V Battery Capacity: 4400mAh Colour: BLACK Dimension: 156.50 x 88.00 x3 0.00 mm