Which statement about EFB battery policy is true?

• A. The EFB must be charged to at least 50% before dispatch.
• B. The EFB must be charged to at least 90% before dispatch.
• C. The EFB must be charged to at least 80% before dispatch.
• D. The EFB charge level is not a factor.

Answer: (C)

Having the EFB ready with enough battery before dispatch is about reliability and readiness of the device used on the flight. Charging to at least 80% before dispatch ensures there’s a solid reserve for essential tasks like accessing navigation charts, loading apps, syncing data, and completing preflight and in-flight checklists, even if the device isn’t connected to an external power source right away.

80% is chosen as a practical balance: it provides enough usable energy for expected operations without pushing the battery to full charge all the time, which can be gentler on Li-ion health and still keeps the device from dropping to a critically low level during the flight. If the level were lower, there’s a greater risk of power depletion mid-operations; if it were consistently higher, it could unnecessarily strain charging cycles.

So, the statement that the EFB must be charged to at least 80% before dispatch reflects the standard for ensuring reliable, ready-to-use performance.