Abstract: A powered transport unit which may be removably adapted to a standard golf bag cart or the like of the type having a pair of oppositely disposed wheels. A battery and a motor sit at opposite ends of a pivotally mounted power frame positioned between the wheels of the cart. A powered drive wheel is aligned with the wheels of the cart. The relative positions of the battery, motor and pivotal mounting allows the unit to achieve a zero resultant force on the cart's handle at a chosen motor output. A power control unit adaptable to the handle of the cart allows the user to activate and regulate the action of the drive wheel.