Some newer phones support bypass charging, which powers the phone directly instead of continuously cycling the battery. Mine doesn't support that, unfortunately, so I've limited charging to 80% to reduce battery stress.

That's surprising to me. It's been a standard feature on laptops for 20 years.

Edit: Or I should say, it was 20 years ago. Maybe modern stuff is worse, but my M2 MacBook Air and Framework 13 Intel Core both power on without a battery.