Mesh Tower V2 - Not displaying voltage - MeshCore

Been testing out my Mesh Tower v2 that I got recently and it seems to be working and repeating messages and can access thru the MeshCore app. However when I go to check battery status in the app it displays 0% and 1.81V. Is this expected? Or do I need to set something else up to get battery reporting or is this an issue on the MeshCore app side of things?