PURPOSE:To prevent an electricity accumulating element from being damaged due to exothermic reaction with short-circuited current restrained, and thereby enable a large scale electricity accumulating element high in energy density to be realized by electrically connecting electrodes to the terminal of the electricity accumulating element via a resistor element with a high positive temperature resistance factor. CONSTITUTION:In a lithium battery, a positive electrode and a negative electrode are composed of specified active material, an electrode group 1 is so constituted as to be formed into strips of paper so as to be layered while separators are held in between. The terminal 4 of the layered positive electrode plate is electrically connected to a positive electrode terminal 3 via a resistor element 2 with a positive resistance temperature factor. By this constitution, electrical resistance between the electrodes is increased at the time of shortcircuiting, so that an electricity accumulating element is prevented from being damaged due to exothermic reaction with short-circuited current restrained.
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