It's in the LCD UI for now, but it should also work in the Android app and the cloud UI. I'm not sure if it's done in the local web UI yet.
I'll post a screenshot on Monday as I don't have any battery powered Z-Wave devices at home.
You might have to remove and re-add your sensor for this to work though, but I don't think it was meant to be needed.
Keep in mind that not all Z-Wave sensors are doing things exactly the same way, so it's possible that it might not be working with your sensor, but as you didn't really provide any details, I can't really say.