Automated storage system with a container vehicle and a charging system

A method of charging a container vehicle in a storage system, the storage system comprising a horizontal rail grid and a charging system for charging a rechargeable power source of the container vehicle, wherein

• the container vehicle comprises a first set of wheels and a second set of wheels for moving the container vehicle upon the rail grid;
• the first set of wheels is displaceable in a vertical direction between a first position, wherein the first set of wheels may move the container vehicle in a first direction, a second position, wherein the first and the second set of wheels are in contact with the rail grid such that lateral movement of the container vehicle is prevented, and a third position wherein the second set of wheels may move the container vehicle in a second direction perpendicular to the first direction;
• the charging system comprises two charge-receiving elements arranged on the container vehicle and connected to the power source, and a charging station comprising two charge-providing elements connected to a power source charger;
• and
• each of the charge-receiving elements comprises a first contact surface, and each of the charge-providing elements comprises a second contact surface;
• wherein the method comprises the steps of:
• moving the container vehicle in the first direction towards the charging station;
• stopping the container vehicle in a position above the charge-providing elements;
• and
• displacing the first set of wheels from the first position to the second position to lower the first contact surfaces into contact with the second contact surfaces.