@sixwheeledbeast
This is an important topic, thanks for bringing it to the forum, especially considering we’re purchasing already used phones with worn batteries on phones where you cannot replace the battery (don’t you miss those days of spending $10 and putting in a brand new battery?).
For me, I try to be disciplined in only enabling things that I’m actively using and then disabling when not (WiFi, Bluetooth, apps, etc). I also disable all vibrations from keyboard or other action. I also make sure to turn the screen off when done using the phone (I’ve come back to the phone to see somehow the screen was illuminate while I wasn’t using it. Drained quite a bit of battery). For lithium batteries, I understand it’s optimal to charge around 40% and then go to ~80-85% (try not to go to 100% and leave the charging cable plugged in). This has greatly helped my battery life and I hope to get a few years from the phone hopefully before needing to obtain another model.