Considering most of us keep these phones 2 years or less, it really isn't an issue to optimally charge it for long battery life. It is more important not to abuse it with extended high temps and frequent full discharges, but other than that, don't worry about it. Just use it.
Considering the battery will get most people a day+, discharges aren't an issue. This phone does not get hot like my RAZR did. That thing could cook eggs after extended LTE usage. The Maxx doesn't get hot from that, and only gets warm on my Qi charger, but it is nowhere near what the RAZR did in normal use. The RAZR battery life was not the best, and even with the abuse from draining and high temps, it survived its 17 month life and is still usable (refurb after my original battery died). Don't drain it repeatedly, and don't leave it in a black car on a hot summer day. I started the day at 88% (I don't charge at night), and I'm at 80% right now with just putting it in the car dock during my commutes to and from work. I just dropped it on my Qi charger, and will have something in the 90s when I go to bed. I don't think about charging it really, other than consciously putting it on the Qi charger in the evening.
My RAZR got a charge any time I was near power. The life on that thing sucked bad, but it was an exception. I avoided draining it completely, but could not avoid the heat from typical use. Even so, it lasted. As I said, the original RAZR battery died, but that was a defective battery, not a product of abuse. It was only 3 months old.
If optimal charging and care for long battery life was not a major issue on most phones before now, it is not an issue on a batter of this size. Just use it.