Ii once read it better to allow your battery to drain complete every once in awhile to keep the battery calibrated for full performance, fifty percent you are cheating the battery from being it maximum performance, but it your battery try googling and see what it might tell you
The lithium batteries we have now do not have "memory" like the old NiCad batteries did. Actually fully discharging a lithium causes more damage to it than a partial recharge. For optimal battery life do not discharge below 20% or charge above 80%. Also if you're going to be storing it for an extended period, the charge level should be between 50% and 80%. That's why you never get a new phone with a full charge on the battery.
Yeah I gotta agree with Mike, info-lithium in this day and age means something totally different. Fully discharging the battery actually throws off your phones built in management system on how it delegated power usage and optimization. Using your phone normally and trying to plug it in at the same time each night is best. It helps the processor understand your personal usage a bit better. Also, continual charging isnt healthy because just like it sounds you are forcing electrical currents into a device (battery) which causes more strain and then theres the added strain of plugging it into your port and unplugging repeatedly and the wear and tear. As far as wireless charging goes, I think it's great for some models but not all dispute the disclaimer. Just a personal opinion though. The tech is there but not implemented correctly for every phone because that tech was migrated from a development that it was never intended to be used for.