| 摘要 |
A power supply device is provided and includes a fuel introduction unit from which a fuel edible, drinkable, and safe to contact for human body is introduced. The power supply device also includes a fuel cell unit including a negative electrode that is exposed to outside through the fuel introduction unit and that can contact with the fuel, the fuel cell unit being configured to generate electrical energy from the fuel; and an electronic controller unit configured to control feeding of the electrical energy to an external device.
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