The invention relates provides a battery which can easily manufacture the shape of a current collecting connector (2) and at the same time can improve a current collection efficiency, reliability and operability by causing metal foils of a positive electrode (1a) or a negative electrode (1b) to be bent along a body part (2a) of the current collecting connector (2) and twist a connecting plate part (2b) which is projected to be arranged so as to connect the metal foils of the positive electrode (1a) and the negative electrode (1b) of the power generating element (1).