Indeed, LG's 32wh battery laptop rated at 23 hours instantly comes to mind. For Intel based laptops built in the last 10 years basically the only thing making

Indeed, LG's 32wh battery laptop rated at 23 hours instantly comes to mind. For Intel based laptops built in the last 10 years basically the only thing making a difference in battery life for laptops with same CPU is screen, and battery. Everything else is almost the same everywhere. NVME SSD + WiFi will uniformly eat 2W. Power conversion will also eat at to 500-800mW. All other peripherals combined will unlikely to eat more than 1 watt, with exception of 1GB ethernet if working full speed.