I'm sorry I can't figure out why the battery dial and text are not working properly. They work ok on my Galaxy Watch.
For the white battery text I have:
All I can think of is that the Tickwatch is not processing the transparency expression in the same way as the Facer development environment or the Galaxy Watch.
I assume on your watch the battery level text is always blank, is that right?
If so it means that the conditional expression is either always evaluating to 0 or it is failing to be interpreted at all.