A portable electronic lock comprises a lock body and at least one securing part, in particular a U hoop or a bolt, that can be selectively locked to the lock body or released from the lock body. The lock body further comprises a first introduction opening and a second introduction opening for introducing a respective section of the at least one securing part into the lock body; an electromechanical locking device that has a first latch and a second latch, a cam rotatable about an axis of rotation and an electric motor for driving the cam; and a control circuit. The first latch can be displaced by means of the cam from an unlocked position into a locked position in which the first latch engages into the first introduction opening in order to lock the at least one securing part in the first introduction opening, and the second latch can be displaced by means of the cam from an unlocked position into a locked position in which the second latch engages into the second introduction opening in order to lock the at least one securing part in the second introduction opening. The control circuit is configured to control the electric motor to drive the cam.