Yeah. 11th gen Framework 13, so one of the first ones. Since I got it I had to use Windows exclusively because of some client work, and battery life was pitiful. 2-3 hours perhaps? Once that project finished I swapped out the SSD and put on Ubuntu with KDE. I was expecting the batter life to be worse, but it is demonstrably better. I now get more like 6 hours, albeit with my power plan on efficiency.