A battery remaining capacity display device , comprising: an individual remaining capacity calculator configured to calculate individual remaining capacities of a plurality of batteries configured to be removably connected in parallel to a power consumption element ; a total remaining capacity calculator configured to calculate total remaining capacity of the plurality of batteries on the basis of the individual remaining capacities calculated by the individual remaining capacity calculator ; a display controller configured to control display of the individual remaining capacities and display of the total remaining capacity; a display instruction component configured to instruct the display controller either to display or not to display; and a display component configured to display the individual remaining capacities and the total remaining capacity, wherein the display controller is configured to control that the individual remaining capacities and/or the total remaining capacity is displayed on the display component according to an instruction from the display instruction component , characterized in that the display instruction component is configured to instruct the display controller to display only the total remaining capacity without displaying the individual remaining capacities on the display component during drive of the power consumption element , and to display only the individual remaining capacities without displaying the total remaining capacity on the display component during battery exchange by switching between the display of the individual remaining capacities and the display of the total remaining capacity. an individual remaining capacity calculator configured to calculate individual remaining capacities of a plurality of batteries configured to be removably connected in parallel to a power consumption element ; a total remaining capacity calculator configured to calculate total remaining capacity of the plurality of batteries on the basis of the individual remaining capacities calculated by the individual remaining capacity calculator ; a display controller configured to control display of the individual remaining capacities and display of the total remaining capacity; a display instruction component configured to instruct the display controller either to display or not to display; and a display component configured to display the individual remaining capacities and the total remaining capacity, wherein the display controller is configured to control that the individual remaining capacities and/or the total remaining capacity is displayed on the display component according to an instruction from the display instruction component , characterized in that the display instruction component is configured to instruct the display controller to display only the total remaining capacity without displaying the individual remaining capacities on the display component during drive of the power consumption element , and to display only the individual remaining capacities without displaying the total remaining capacity on the display component during battery exchange by switching between the display of the individual remaining capacities and the display of the total remaining capacity. <EOS>