What is the primary purpose of the standby battery on the A320?

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Multiple Choice

What is the primary purpose of the standby battery on the A320?

Explanation:
The standby battery is there to keep essential cockpit equipment powered if the main electrical system fails. It supplies the Standby Bus, which provides power to critical flight instruments and related systems so the pilots retain situational awareness and can continue to fly and land safely even with electrical fault. It does not power cabin lighting, entertainment systems, or hydraulics—those are not the critical systems needed to maintain control in an electrical emergency.

The standby battery is there to keep essential cockpit equipment powered if the main electrical system fails. It supplies the Standby Bus, which provides power to critical flight instruments and related systems so the pilots retain situational awareness and can continue to fly and land safely even with electrical fault. It does not power cabin lighting, entertainment systems, or hydraulics—those are not the critical systems needed to maintain control in an electrical emergency.

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