The invention relates to a stand-alone shuttle conveyor (10) intended, in particular, for a storage and logistics preparation warehouse, including a chassis (24) having the following elements mounted thereto, namely: wheels (26) enabling the shuttle conveyor (10) to move; a means (30) for driving the wheels (26); a means for powering the shuttle conveyor, comprising an exclusively electrostatic electrical energy storage means (32); and a means (48) for joining the recharge zones (18, 20) which are connected to a common fixed-voltage electrical power supply (22) in order to recharge the electrical power supply means. The invention is characterised in that the electrical power supply means include a first part for charging the electrical energy storage means (32) and a second part for delivering the energy to the drive means (30), said electrical energy storage means (32) being formed by at least one capacitor. The invention also relates to a storage warehouse (1) including one such shuttle conveyor.