That’s a well written article, and as a recent owner of a Lenovo Thinkpad I totally agree that TLP is a terrific tool for managing battery life.
Like you, I only require long battery life very occasionally, so I use TLP to maintain the battery charge level at between 70 - 80 %, dramatically reducing full charge cycles, thus improving battery longevity - time will tell how effectively this translates into “number of years before replacement is required”.
The one issue that bothered me about managing battery life with TLP is having to remember (or look up) the command to fully charge the battery on the odd occasions when I need maximum charge. I found a solution - or rather I made a solution in the form of a small and simple GUI wrapper which I named TLP Battery Boost.
TLP Battery Boost is free and open source software, made with Python and Tkinter (no other dependencies other than TLP itself). I have recently released version 1.2.0 of this app on PYPI. I’m not allowed to post links, but if anyone wants to try it, just search for “TLP Battery Boost” and enjoy the benefits of TLP with the convenience of a simple GUI for those occasions when you need to fully charge your laptop.