@Capolini I presumed from your remark about longevity that you might be interested in the studies. If not then, as you note, often you can still get reasonable life even without paying any attention to such.
When, as above, I supply links to the literature, they are not meant to be "challenging" but, rather, informative. There is much misinformation on the web about Li-ion technology, and part of the reason that I volunteer here and elsewhere is to help guide readers to more accurate information. Of course I do realize that not everyone is interested in more technical matters, but many of us do enjoy such - not only for optimizing Li-ion life etc, but also due to genuine curiosity about the underlying science (which can be quite enjoyable)