Provided is an electric device that incorporates a first rechargeable battery (11) and a second rechargeable battery (12) having a lower full charge voltage than the first rechargeable battery (11). The electric device includes: a first power circuit (19) that steps down the voltage outputted by the first rechargeable battery (11) to a first voltage and outputs such voltage; and a second power circuit (20) that steps down the voltage outputted by the second rechargeable battery (12) to a second voltage, which is lower than the first voltage, and outputs such voltage.