Replacement Lenovo ThinkPad S431 S440 45N1141 45N1140 laptop battery -  -  - Colour: Black, Type: Li-ion, Voltage:  14.8V, Capacity:  3100mAh/46Wh, Warranty: 1 Year, Compatible P/N:45N1141 45N1140, Fit model:For Lenovo Think Pad S