[mrozel]

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).

[p_l]

Maxed out X250 had been reported to last 26h hours online, with plain debian install, no tricks like Macs' "oh, you look outside, I'll go to sleep now"