An autonomously mobile device (12) for loading bobbins (18) in a manufacturing facility (10) comprises a first autonomously mobile carriage (30) on which a robotic arm (32) for moving at least one bobbin is mounted, the first autonomously mobile carriage also comprising a control unit, autonomous movement means controlled by the control unit, and an electrical energy storage device, the autonomous movement means and the robotic arm being supplied with electrical energy by the electrical energy storage device of this first carriage (30), the first autonomously mobile carriage (30) also comprising means (40) for electrically recharging its electrical energy storage device by mechanical friction contacts or contactlessly by electromagnetic induction.