Confirm a Battery Failure 2 Identify Your PathPilot Controller 4 Replace the Battery on a Revision C or Revision D Controller 5 Replace the Battery on a Brix Controller 8 Replace the Battery on a PathPilot Operator Console 10 Replace the Battery on an xsTech Controller 12 Replace the Battery on a Legacy Controller 14 Restart the Controller and Set the Date and Time 16 Troubleshooting 17