If you charge your camera using a Windows computer and the external charging cable, you might get a notification that there was a problem installing the device driver and that the USB device is not recognised.
This is because the charging cable only provides power to your Batt-Stick and cannot be used to transfer data to your computer. If you get a device driver notification, you can be assured that your Batt-Stick does not have an error, and that this is simply a feature of the operating system.