Type:Li-ionVoltage:10.8VCapacity:4400mAhWeight:325G Color:blackDimensions:153x85x24mmFitthenotebookmodels:IBMThinkpadR30R31seriesReplacethefollowingpartnumbers: 02K6821,02K6822,02K6823,02K6824,02K6825,02K6829,02K6830and02K6832Onlythehighestqualitycellsareusedinourlaptopsbatteries