When Monitored
WARNING: This page is about a different car, the 2013 RAM 3500 HD and 2013 RAM 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
With the battery voltage above 11.0 volts. The Battery current is continuously monitored during the different transitions from engine running, to an Auto Stop, during Auto Stop, to an Auto Start, and back to engine running. The readings from the Intelligent Battery Sensor (IBS) are compared to rational readings for each transition.