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System functions: Notes

The following system functions are described for power management ("Advanced Power Management"):

See the following functional description for the state of charge, battery condition and startability limit functions: INTELLIGENT BATTERY SENSOR AND BATTERY .

Fig 1: Intelligent Battery Sensor Communication Diagram
G09872906Courtesy of BMW OF NORTH AMERICA, INC.
Item Explanation
1 Advanced Power Management (APM)
2 Battery data (current, voltage and temperature)
3 Intelligent battery sensor (IBS)
4 Engine
5 Consumer
6 Alternator (G)/DC/DC converter
7 Battery
8 Specified setpoint value for charging voltage
9 Reduction of the power consumption or deactivation of individual electrical consumers
10 Idle speed increase