This and it's come a long way in the last 10yrs but it's more dependent on hardware. Optimus still an issue with nvidia (3hrs) vs 630(5hrs) and have to switch b

This and it's come a long way in the last 10yrs but it's more dependent on hardware. Optimus still an issue with nvidia (3hrs) vs 630(5hrs) and have to switch between. However, just bought a pair of (used) x270's to travel with - one has Fedora and the other windows 10. Linux lasts 8-9 hours and the Windows about the same (maybe less).