At what battery percentage does the iPad battery rule indicate a maximum of 1 hour of life remaining?

The correct response indicates that when the iPad battery reaches 10%, it is considered to have a maximum of 1 hour of life remaining. This guideline helps pilots ensure their electronic devices have adequate power, particularly during critical phases of flight or when navigating.

The 10% threshold is based on empirical observations around device performance and battery longevity. As the battery percentage decreases, the available time also diminishes significantly, and at this level, users can expect the battery to deplete quickly, warranting preparations for power conservation or charging. The information reinforces the importance of monitoring device battery levels actively to guarantee operational readiness and avoid potential issues during flight.