The invention relates to the technical field of battery car production, and discloses a 16-inch ladder head self-locking transverse mover for an electric battery car, include a rotating shaft, both ends of the rotating shaft are interference-connected with a first bearing, the outer surface of the first bearing is fixedly sleeved with a fixing sleeve, the outer surface of the fixing sleeve is equidistantly welded with eight struts, One end of the eight supporting rods far away from the fixed sleeve is welded with wheels, the outer surface of the rotating shaft is movably sleeved with a rotating sleeve, the left and right ends of the outer surface side of the rotating sleeve are welded with connecting rods, one end of the two connecting rods far away from the rotating sleeve is welded witha tie rod, and a cross rod is welded between opposite faces of the two connecting rods. The invention places the lifting mechanism in the inclined side direction at the middle part of the bottom of the battery car close to the car ladder, and presses the pull rod downward, so that the lifting mechanism vertically lifts the battery car off the ground, so that the battery car can move horizontally,thus saving time and labor, and facilitating the arrangement of the battery car by people.