I get much higher battery life out of my X1 Carbon 2017 (with the 1080p screen) and its 57Wh battery, to the point where I configured it not to charge above 90%

I get much higher battery life out of my X1 Carbon 2017 (with the 1080p screen) and its 57Wh battery, to the point where I configured it not to charge above 90% to improve battery longevity (tlp can set charging limits on Linux). But without knowing your workload that’s a meaningless comparison, of course. Idle power consumption at medium brightness is around 3.5W for me (connected to WiFi with Chrome open but idle), maybe 5W when actively browsing. It’s amazing.