The battery icon never seems to change, its always a diagonal line, dark one side and light the other. So Perhaps this means the battery is half full or charging; I don’t really know. The Australian distributer is sending me another unit and I have just sent the old one back so hopefully the problem will be resolved soon.
I never seemed to have much luck with the phone app. I tried a different phone as well. Its not clear to me how its meant to work.