A bicycle crankarm (22, 23) comprising a main body (38, 39) extending between a rotation axis (X) and a pedal axis (Y1, Y2) of the crankarm (22, 23), comprising a recharging port (106, 108, 110, 112) for a battery power supply unit (100, 102, 104), wherein said recharging port (106, 108, 110, 112) is made at a face of the main body (38, 39) of the crankarm (22, 23).
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