Abstract: An improved control station powered through an AC/DC converter is provided for use in conjunction with a buried boundary wire to provide a fence-free animal containment system. The control station has a transmitter unit that transmits a signal through the underground wire to determine the pet's boundary, and further includes a battery recharging docking station integrally formed therewith that receives the corresponding collar/receiver assembly worn by the animal when battery recharging of the receiver is necessary. Through the built-in docking station, the control station provides convenient collar battery recharging capability while efficiently using the same AC/DC converter unit that powers the control station transmitter unit.