Some tools I use to actually follow this advice on various devices: I use Chargie devices (chargie.org - no affiliation) to control maximum charge level, and set thermal limits on smartphones and other small devices that can't limit charge internally with software. I also use a Peltier cooled phone holder and charger in the car (about $50 on Amazon), so it keeps the phone cool when charging and processing hard during navigation, and in direct sunlight. On Macbooks I use the free Al Dente app which lets me manage charge level. When I owned an e-Golf EV, I was able to set charge limits through the VW Car-Net app.