Power-supplying system of human-powered vehicle

A power-supplying system of a human-powered vehicle, comprising:

• a first electric power source electrically connectable with a photovoltaic unit to store electricity supplied from the photovoltaic unit;
• and
• electronic controller circuitry electrically connectable with the photovoltaic unit and a second electric power source, the electronic controller circuitry being configured to charge the second electric power source in a first state using electricity supplied from the photovoltaic unit, the electronic controller circuitry being configured to charge the first electric power source in a second state using electricity supplied from the photovoltaic unit, the electronic controller circuitry being configured to change a state of the power-supplying system between at least the first state and the second state.

A power-supplying system of a human-powered vehicle, comprising:

• a first electric power source electrically connectable with a photovoltaic unit to store electricity supplied from the photovoltaic unit;
• and
• electronic controller circuitry electrically connectable with the photovoltaic unit and a second electric power source to charge the second electric power source using electricity supplied from the photovoltaic unit, the electronic controller circuitry being configured to be powered by an electric power source other than the first electric power source.