PROBLEM TO BE SOLVED: To provide an endoscope apparatus capable of being supplied with a voltage required by the endoscope apparatus while limiting a voltage at the terminal of a battery pack and a terminal on an apparatus body side, and suppressing heat generation of the battery pack.SOLUTION: The battery pack 11 of the endoscope apparatus 1 includes a plurality of resistance elements 32a, 32b and 32c whose one end is connected in parallel with the positive power source or negative power source side of the battery pack 11, and a plurality of terminals 33a, 33b and 33c to which the other ends of the plurality of resistance elements 32a, 32b and 32c are connected. A body part 4 to which the battery pack 11 is to be connected includes a plurality of terminals 41a, 41b and 41c to be in contact with the plurality of terminals 33a, 33b and 33c of the battery pack 11, a plurality of resistance elements 43a, 43b and 43c whose one end is connected to the plurality of terminals 41a, 41b and 41c, and a power supply circuit 13 for supplying power to a load circuit.
