Hi @Dhywb. Welcome to the Forums!
Right now, there is no way to make your tracker itself tell you the percentage for the battery. However, I'd recommend in the meantime to go to the Feature Request board for this. I was able to find this similar idea where you can add your vote and comments and the more votes it gets, the more chances it will be reviewed for consideration. You may see the idea by clicking here.
Let me know if there's anything else I can help you with.
Ferdin | Community Moderator,
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