I am getting a "Battery Fault!!! Replace Battery" message on LabQuest.

In some cases the LabQuest Battery Monitor applet in older versions of the LabQuest software may incorrectly report that the battery is defective and display a message indicating that there is a battery fault. If the battery is otherwise holding a charge there is a good chance that the message is incorrect and that the battery is actually okay.

Check the version of the LabQuest App by selecting the Home icon, then Control Panel, then System Information. If you are not running the most recent version of LabQuest App, download and install the free updater from our web site:
http://www.vernier.com/labquest/updates/

If you are already running the most recent version of the software and are still getting this message, chances are good that the battery is failing. You may not need to replace it yet, but follow these detailed steps for additional troubleshooting:
TIL 2077: Original LabQuest Battery Troubleshooting and FAQs