Abstract: A printing apparatus includes at least a tank configured to hold a first printing material at a first position and a tank configured to hold a second printing material at a second position different from the first position. A light emitting control unit controls light emitting states of a plurality of light emitters. If an amount of the printing material in the first tank is less than a predetermined amount, and an amount of the printing material in the second tank is greater than a predetermined amount, the light emitting control unit transits a state of a first light emitter from a state indicating that the amount of the printing material is greater than the predetermined amount to a state indicating that the amount of the printing material is less than the predetermined amount, and maintains a state of a second light emitter.

Abstract: An apparatus according to one embodiment includes a positive and a negative electrode terminals; modules each including an assembled battery and a CMU, the assembled battery including cells, the CMU to detect a voltage and a temperature of the assembled battery; a main circuit for electrical connection between terminals of the modules and the positive and negative electrode terminals; a BMU to receive information about the voltage and the temperature from the respective CMU; a supply circuit to convert DC power from the main circuit and supply the converted power to the BMU; a breaker for interrupting the main circuit; and a circuit to block a current flowing through the main circuit in a direction of charging the modules, in response to a stop of a control signal from the BMU.

Abstract: An apparatus according to one embodiment includes a positive and a negative electrode terminals; modules each including an assembled battery and a CMU, the assembled battery including cells, the CMU to detect a voltage and a temperature of the assembled battery; a main circuit for electrical connection between terminals of the modules and the positive and negative electrode terminals; a BMU to receive information about the voltage and the temperature from the respective CMU; a supply circuit to convert DC power from the main circuit and supply the converted power to the BMU; a breaker for interrupting the main circuit; and a circuit to block a current flowing through the main circuit in a direction of charging the modules, in response to a stop of a control signal from the BMU.