A battery module for use with a controller includes a printed circuit board assembly (PCBA) mounted to a plurality of battery cells. The PCBA includes a substrate, a radio frequency (RF) communications circuit, a cell sensing circuit, and a conductive interconnecting member. The cell sensing circuit is operable for measuring a respective cell voltage of each of the battery cells. The conductive interconnect member forms an electrical connection between the battery cells. The RF communications circuit is in wireless communication with the controller and is operable for wirelessly transmitting the measured cell voltages to the controller. A battery system includes a master battery controller and the battery pack. A vehicle includes an electric machine operable for generating output torque for propelling the vehicle, as well as the battery system noted above.