Abstract: A cellular depot including a plurality of cells facing onto a corridor through which runs at least one motor-driven car to convey loads between the cells. The car includes a trolley which is motor-driven to move between the car and the inside of a cell and transfer a load stored or to be stored to and from the car and cell. The trolley includes a hydraulic drive connected, for their power supply, to an independent source of fluid under pressure, which is automatically recharged when the trolley is accommodated on the car.