Abstract: A display input part 28 displays a first element relevant to operation of an electric blower 14, and a second element having trade-off relation with the first element. The display input part 28 receives input for changing a value of at least either one of the first element and the second element. A main control part 29 obtains, on the basis of the value after change received by the display input part 28, a value of the other of the first element and the second element. An indication control part makes the display input part 28 display the value obtained by the main control part 29. A driving control part controls driving of the electric blower 14, on the basis of the value of the first element received by the display input part 28 or the value of the first element obtained through calculation by the main control part 29.

Abstract: An electric vacuum cleaner including: a secondary battery; an electric blower that generates negative pressure by consuming electricity stored in the rechargeable battery; and a control unit that controls driving of the electric blower, and changes discharge current of the rechargeable battery based on the difference between terminal voltage of the rechargeable battery while the electric blower is stopped and terminal voltage of the rechargeable battery after a predetermined time has elapsed since the electric blower has been started up. The electric vacuum cleaner can continue driving of an electric blower and increase operation time even in the state that the internal resistance of a rechargeable battery is increased.

Abstract: A display input part 28 displays a first element relevant to operation of an electric blower 14, and a second element having trade-off relation with the first element. The display input part 28 receives input for changing a value of at least either one of the first element and the second element. A main control part 29 obtains, on the basis of the value after change received by the display input part 28, a value of the other of the first element and the second element. An indication control part makes the display input part 28 display the value obtained by the main control part 29. A driving control part controls driving of the electric blower 14, on the basis of the value of the first element received by the display input part 28 or the value of the first element obtained through calculation by the main control part 29.

Abstract: An electric vacuum cleaner including: a secondary battery; an electric blower that generates negative pressure by consuming electricity stored in the rechargeable battery; and a control unit that controls driving of the electric blower, and changes discharge current of the rechargeable battery based on the difference between terminal voltage of the rechargeable battery while the electric blower is stopped and terminal voltage of the rechargeable battery after a predetermined time has elapsed since the electric blower has been started up. The electric vacuum cleaner can continue driving of an electric blower and increase operation time even in the state that the internal resistance of a rechargeable battery is increased.