What does the auxiliary battery in the secondary electrical system specifically provide?

The auxiliary battery in the secondary electrical system serves primarily as a backup for the generator. In the event of a failure or malfunction of the primary electrical system, the auxiliary battery plays a crucial role in ensuring that essential electrical components remain powered. This is vital for maintaining operational capabilities and safety during flight, as it helps to provide a reliable source of electrical energy when the primary systems are unavailable.

While the auxiliary battery provides power to various systems, its main function is to act as a redundancy for the generator, ensuring that essential instruments and controls remain functional during emergencies. Other options may refer to important functions but do not capture the primary role of the auxiliary battery in the context of system reliability and safety.