A motorized stair chair for transporting a human subject having a chair frame having front and rear sections； a collapsible seating assembly attached to the front section of the chair frame； ground-contacting wheels coupled to the chair frame； a motor coupled to the chair frame； a removable battery configured to power the motor and the motorized stair chair, wherein the battery and the motor are separately coupled at different locations on the chair frame； and a pair of motorized continuous, rotatable tracks responsive to the motor, the tracks being integrally and pivotally coupled to the rear section of the chair frame, wherein the motorized tracks are configured to engage stairs.
