Are you looking at the pics? In the first pic I had been using Maps and Podcast app equally.
I am listening while driving for work, so the bars are always going up and down.
Also, I do not notice battery drain for the signal unless the signal is 1 bar or fringe with 1 bar or no service alternating. (I can easily tell as the phone gets warm also.)
Downloaded. I sync manually via iTunes. I used to do this to save my MBs, but, I just prefer to have them in the phone. I stream most of my music.
Maps is 33%...yes, and Podcasts is 55%! Never would have guessed podcasts, which does not use GPS, would use more energy than a GPS app! (Podcast app should not be using GPS.)
As far as rebooting goes, I do this on a regular basis, including every time I sync (I sync via iTunes).
My question is valid, I was wondering why my battery was draining so fast, so decided to check out the battery status, which I hadn't done...I was shocked at what I saw in the pics above and surprised no one else seems to be.
However, I will have to see how it goes with iOS 9.1. My usage varies, so, I haven't had a chance to check it out w/9.1 yet. I will report again sometime next week.