OH … I only did those 2 laptops … but wait a couple of seconds, I’ll give you what I can find for Dell. 
Some vendor specific on this page: (but not Dell … )
https://linrunner.de/tlp/settings/bc-vendors.html
Some search for “Dell” …
https://linrunner.de/tlp/search.html?q=Dell&check_keywords=yes&area=default
Well I guess I’m not to succesful to match Dells with TLP.
I would continue my search with the other programs you can find that will work with your laptop.
The one mentionned by the OP (first post) must be very interesting to try …
My 2¢ 
On some threads in our forum:
https://forum.endeavouros.com/search?q=battery%20charging
This thread by Anthony is nice :