A battery module ensuring task safety during assembly or repair of the battery module by blocking current. The battery module includes: i) at least one first battery, each first battery having an end portion connected to an anode terminal and at least one second battery, each second battery having an end portion connected to a cathode terminal wherein the anode terminals and the cathode terminals are made of elastic materials; ii) at least one connection member for electrically connecting adjacent anode and cathode terminals; iii) a first pack case having battery-containing portions in which the batteries are contained and connection member mounting portions on which the connection members are mounted; and iv) a second pack case which is coupled with the first pack case. The anode and cathode terminals are pressed by the second pack case so as to be in contact with the respective connection members.