Kia Sportage: Charging System / Battery Sensor Description and operation
Vehicles have many control units that use more electricity. These units control
their own system based on information from diverse sensors. It is important
to have a stable power supply as there diverse sensors giving a variety of information.
Battery sensor (A) is mounted on battery (-) terminal. It transmits battery
voltage, current, temperature information to ECM. ECM controls generating voltage
by duty cycle based on these signals.

Specifications
Battery Sensor
Item
Specification
Rated Voltage (V)
12 - 14
Quiescent Current (uA)
...
Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-)
terminal.
2.
Disconnect the battery sensor connecto ...
Other information:
Used to start the engine.
Used to lock and unlock the doors.
To unfold the key, press the release button then the key will unfold automatically.
To fold the key, fold the key manually while pressing the release button.
CAUTION
Do not fold the key without pressing the release button. ...
Component Location
1. Fuel filler door
...