I also have the XPS 17 with i7-12700H and 4K screen. I'm able to get 8-10 hours of work (compiling Rust, several docker containers on the run, at least a dozens

I also have the XPS 17 with i7-12700H and 4K screen. I'm able to get 8-10 hours of work (compiling Rust, several docker containers on the run, at least a dozens tabs, etc...). I'm on ArchLinux with a window manager and no desktop whatsoever. I also disabled the GPU. I wonder if there is something draining your battery on the background.