What is indicated when the low-battery indicator starts blinking?

When the low-battery indicator begins to blink, this typically signifies that there is approximately 30 minutes of battery life remaining. This preemptive alert provides the user enough time to prepare for changing or recharging the battery without the NVGs losing functionality unexpectedly. Understanding the low-battery indicator is crucial for maintaining operational readiness, especially in situations requiring continuous use of night vision capabilities.

Choosing this option reflects a good understanding of how the equipment communicates its status to the user, ensuring that they are equipped to manage power effectively during crucial operations. The other choices involve scenarios that either misinterpret the function of the indicator or do not provide accurate information about the battery life remaining.