A battery assembling apparatus is disclosed. The battery assembling apparatus comprises: first and second rotary tables arranged to face each other at points on respective outer circumferences and rotate in forward directions relative to each other; a battery holding part provided on the outer circumference of the first rotary table to hold a battery; a frame holding part provided on the outer circumference of the second rotary table to hold a frame; a battery supplying part for supplying batteries to the battery holding part at a position different from a facing position between the first and second rotary tables; a frame supplying part for supplying frames to the frame holding part at a position different from the facing position; and a discharging part for taking out an assembly of a battery and a frame assembled together from the facing position.