A probabilistic approach to guess my phone battery level.

I always have my phone within reach and I'm always paranoid about missing an urgent call or not answering a text in time. When I check it, I can't help but sneak a peek at the battery level to see if I need to bring my charger along or not. That said, I sometimes find that some battery levels are more recurrent than others. This led me to think more than once if there would be a way to model this frequency appearance. The purpose of this article is to present a probabilistic modeling basis to try and track the fluctuation of my battery level.