A bicycle control system comprises a first bicycle component and a second bicycle component. The first bicycle component is configured to be mounted to a bicycle and to perform wireless communication. The second bicycle component is configured to be mounted to the bicycle and to perform wireless communication. At least one of the first and second bicycle components is configured to be electrically connected to a battery. One of the first and second bicycle components is configured to wirelessly output a pairing demand signal to the other of the first and second bicycle components in response to charging of the battery.