Warranty 1 Year Voltage 11.1V Battery Type External Cells 6 Cell Cell Type Li-ion 18650 cell Battery Capacity 4000mAh Watt-Hour 44Wh Compatible with DELL Inspiron 13Z Series, DELL Inspiron 13z-N311z Series, DELL Inspiron N311z Series, DELL Inspiron 14Z Series, DELL Inspiron 14z-N411z Series, DELL Inspiron N411z Series, DELL Latitude 3330 Series, DELL Vostro V131 Series, DELL Vostro V131D Series, DELL Vostro V131R Series