Shimano Di-2/d-fly charging question

New to Di-2 this past March and added d-fly about three weeks ago. Weird (maybe) question:

With d-fly I can now view the charge level on my Wahoo Element Bolt. I ride most days and when I first viewed the charging level it displayed 60%. Three weeks later it still displays 60%. When I check the charge level on the Di-2 junction box. I get the flashing lights that equate to less than 100% but more than 50%, so that checks out. It seems like in 3 weeks of riding I should have burned some of the charge. My question is for any of you that have d-fly and a computer, what percent interval displays on your computer? 1%, 5%, etc. Great site by the way. Thanks.