What kind of programs do you use? I can get ~20 hours on a zenbook flip with OLED, because I use mostly terminal programs (black background, so most of the pixels are off).

Have you tried running powertop for a bit? It would be interesting to see if the screen was consuming most of the power, or if the draw can be attributed to a particular device (maybe it is something useless like a Bluetooth radio that you can shut off!)

I wonder, if you can’t see the difference, maybe try halving the screen resolution? No reason to render all those extra pixels if you don’t need them, right? Plus, I guess it is rare in 2023, but any UI elements that are badly coded and not scalable would be sort of “normal sized.”