In the event of a total electrical failure with maximum load shed, how long are the batteries expected to last?

The batteries on the Dassault Falcon 2000LXS are designed to provide power during a total electrical failure, particularly in situations where maximum load shedding is implemented. In this mode, critical systems are maintained while non-essential loads are disconnected to ensure the longevity of battery power.

The expected duration of 77 minutes aligns with the operational parameters defined for the aircraft’s emergency electrical system. This duration allows pilots to manage essential functions, such as communication and navigation, ensuring the safety of the aircraft and its occupants until alternate measures can be taken.

The specific design and capacity of the battery system are calibrated to support the aircraft's essential functions within that timeframe, striking a balance between safety and operational efficiency. This understanding is crucial for pilots and crew members as they prepare for various emergency scenarios.