An electric storage device including a case, a positive electrode, a negative electrode, a current collector, a gasket, and a conductive member. The magnetocaloric elements are connected thermally two by two at their consecutive ends through the intermediary of a heat exchange mechanism in thermal contact respectively with the heat transfer fluid circulating in the first of the magnetocaloric elements and with the heat transfer fluid circulating in the second of the magnetocaloric elements. The threaded rod can move in a linear manner in relation to the gear motor when the gear motor is installed in a stationary manner or when the treaded rod is installed in a stationary manner. The electrolyte contains a high polymer, a plasticizer, a lithium and at least either carboxylic acid or carboxylate. The method further includes transmitting the output signal to the display. During a normal servo, a header mask signal is generated using a PLL-wobble signal to mask a header area.