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6 Electrical system
General
The 911 GT3 Cup (991 II) has been significantly improved in terms of operating comfort
and functionality. Compared to previous models, the electrical equipment has been
upgraded and new and attractive features are available. The integration of an electro-
pneumatic gear shift system, the innovative electrical system control unit, and the color
display all improve the operating comfort. Moreover, the center console is now
oriented towards the driver so that the operating ergonomics are considerably
improved.
Power supply
6.2.1 Battery
An AGM battery (Absorbent Glass Material) with 70 Ah is used in the 911 GT3 Cup (991
II) (6.2.1.1). Special micro-fiber glass mats are inserted tightly between the positive
and negative lead plates, binding the entire battery acid. In demanding situations,
higher amounts of energy can be delivered by the fast reaction between the acid and
the plate material. The battery is maintenance-free and sealed. To optimize the
vehicle's weight distribution, the battery is installed inside the vehicle in the passenger
foot well.
The maintenance-free AGM battery offers the following advantages:
Sealed, valve-controlled battery with high cycle stability
High cold start performance
No acid leaks in case of damage, vibration-, leak- and tilt-proof
Flexible installation and safe handling
High capacity and longer service life
For an improved longevity of the battery, it is recommend to regularly
charge/compensation charge the battery.
6.2.2 Generator
In addition to the battery, the generator ensures the power supply to the electrical
consumers while the engine is running. The rated current of the generator is 175 amps.
Version: 4/20/2018
Electrical system
6.2.1.1
The battery is designed for a cut-off
voltage of 14.5 to 14.8 V
The generator cut-off voltage is 13.8 V
911 GT3 Cup (991 II)
MY 2018
313
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