This information pertains to the original LabQuest.

If you have LabQuest 2, see this article.

If you receive a “No Battery” message on your LabQuest, it is most likely because the battery wiring harness has come loose from the LabQuest unit. Try removing and reinstalling the battery. For more information about how to change the battery, see: How do I remove or replace a LabQuest battery?

If this does not resolve your issue, contact Vernier technical support for further assistance.