A bicycle electrical component is basically provided with a cover, a battery and a wireless communication unit. The cover is configured to cover an opening formed on a bicycle. The cover has a center plane bisecting the cover in a thickness direction of the cover, a first side and a second side opposite to the first side with respect to the center plane. The battery configured to be attached to the cover and to be entirely disposed on one of the first side and the second side. The wireless communication unit is configured to be attached to the cover and to be entirely disposed on the other of the first side and the second side.