[nerdtalker]

All of the considerations are pretty much taken care of by the internal charging circuitry in the battery itself, or in the charging circuitry on the device itself.

The "wear" of the battery on a chemical level has more to do with Li+ ions getting "stuck" in the tetrahedral sites of the LiMn2O4 structure of the graphite cathode than some magical properties imparted by fully cycling the battery. The back and forth travel of Li+ ions between the graphite anode and the aforementioned cathode is what makes current, and ions getting "stuck" in either (generally by bonding with other contaminants or because of other ions which also occupy the interstitial sites in the cathode) is what "wears" the battery. It's merely a function of use.