This information pertains to LabQuest 3.

If you have a LabQuest 2, see this article.
If you have an original LabQuest, see this article.

  95%—Running on battery power (95% battery life remaining)

  95%—Battery is charging (95% charged)

—Battery fault or no battery
Note: If you see this icon when you power your LabQuest for the first time, the protective battery tab may not have been removed.

See also:
LabQuest 3 battery does not charge.