The new patented method of movements of packaged cargoes at warehouse isproposed in this article. The proposed method of loading is superior in economic efficiency,reliability, cheapness, simplicity of construction and use, to all other methods of loadingimplemented by robots. The method allows the mobile robot to load a cargo which is three times asheavy as this mobile robot, wherein almost no electrical energy is consumed during loading. Inimplementing the method, two mobile robots are used, each of which contains a mobile platform, anomnidirectional mobile wheel-type mechanism and a transport suspension with independentsuspension for each wheel. Actually, the mobile robots help each other to load cargo on the firstmobile robot, through robot cooperation. Loading of the container with the load on the first mobilerobot is carried out by actuating a two-arm lever, which is carried out through the impact of thebottom of the mobile platform of the second mobile robot on the longer arm of the two-arm lever bylowering the mobile platform of the second mobile robot due to the operation of the transportsuspension of the mobile platform of the second mobile robot. For example, if the length of thelonger arm of the two-arm lever is three times longer than the shorter arm of the two-arm lever then the second mobile robot of weight 50 kg is capable of loading a container with the load of weight150 kg on the first mobile robot.