Electrical device and rotational device for human-powered vehicle

An electrical device of a rotational device of a human-powered vehicle, comprising:

• an electronic controller configured to operate with first power consumption in a first state and configured to operate with second power consumption lower than the first power consumption in a second state;
• the electronic controller being configured to change the state of the electrical device from the second state to the first state in a case where a wake condition is met in the second state, the wake condition being free of axial acceleration defined an axial direction parallel to the rotational axis of the rotational device;
• and
• the electronic controller being configured to maintain the second state in a case where the electronic controller recognizes that the axial acceleration changes in the second state.

An electrical device of a rotational device for a human-powered vehicle, comprising:

• a power-source sensor configured to sense an output voltage of an electric power source;
• an electric component configured to be powered by the electric power source;
• and
• an electronic controller electrically connected to the power-source sensor to obtain the output voltage sensed by the power-source sensor in response to power supply from the electric power source to the electric component, the electronic controller being configured to calculate a level of charge of the electric power source based on the output voltage.

An electrical device of a rotational device for a human-powered vehicle, comprising:

• an electric power source which is rechargeable;
• a connector port to which a charging power source is electrically connected;
• an electronic controller configured to be powered by the charging power source without being powered by the electric power source in a state where electricity is supplied from the charging power source to the connector port;
• and
• a switching circuit electrically connected to the electric power source, the connector port, and the electronic controller to change power supply between the electric power source and the charging power source.

An electrical device for a human-powered vehicle, comprising:

• a connector port to which an electric cable is detachably connected;
• an electronic controller electrically connected to the connector port to communicate with a first external electrical device via the connector port and the electric cable;
• and
• a protection circuit electrically connected to the connector port to restrict electrical operation from a second external electrical device to the electronic controller via the connector port.