System and method for charging and stacking electric transport devices

A method of charging and stacking a plurality of electric transport devices, the method including:

• providing a charging mat having a plurality of charging terminals, wherein the plurality of charging terminals have a first shape;
• placing two or more electric transport devices on top of the charging mat in a stacked arrangement, wherein each electric transport device has a pair of side surfaces including a plurality of connection points, the connection points on one of the side surfaces having a second shape that is configured to conform to the first shape of the plurality of charging terminals;
• wherein placing the two or more electric transport devices on the charging mat includes:
• aligning the plurality of charging terminals on the charging mat with the connection points of a first electric transport device located on one of the side surfaces having the second shape such that the connection points of the first electric transport device and the charging terminals fit into each other;
• arranging the first electric transport device so that the one of the side surfaces including the connection points having the second shape is on top of the charging mat and the connection points are connected to the charging terminals of the charging mat;
• and
• stacking at least one additional electric transport device on top of the first electric transport device.

An electric transport device comprising:

• an outer casing including a pair of side surfaces;
• an onboard battery;
• a front wheel and a rear wheel, at least one of the front wheel or the rear wheel including an electric motor;
• a plurality of connection points located on each of the side surfaces of the outer casing, wherein the connection points on one side surface have a first shape and the connection points on the opposite side surface have a second shape that is configured to conform to the first shape such that the first shape and the second shape fit into each other;
• and
• wherein the onboard battery is electrically connected to the connection points so as to be charged when the connection points on at least one of the side surfaces are in contact with a charging source.