Abstract: A battery connector system for use with a powered ride-on vehicle for children, where the vehicle includes an electric motor adapted to drive one or more wheels of the vehicle and a wiring harness adapted to convey power to the motor. The battery connector system includes a plug attached to the wiring harness and has a case substantially enclosing positive and negative plug contacts. The plug further includes a normally-open switch interposed between a switched one of the plug contacts and the wiring harness with the switch having an actuator by which the switch may be closed, whereby the switched plug contact is not electrically connected to the wiring harness until the switch is closed. The system further includes a battery including positive and negative terminals and a socket including housing structure adapted to fit together with the plug case and substantially enclosing positive and negative socket contacts which are respectively connected to positive and negative terminals of the battery.