Comment by MisterTea

Love the Thinkpad line. It's kinda the hackers laptop of choice.

> X220/X230

These are pretty solid with dual batteries. Also popular for OpenBSD and 9front, the latter of which I run on an x230 (it stopped charging the removable battery :-/) You can get about 2 hours off the internal and 6~8 with a big fat removable battery, maybe more if the OS and drivers can properly throttle hardware power settings.

I have an X1 carbon 5th gen and it's quite light but not useful for 9front without some Ethernet driver tweaking (likely some phy bits need twiddling.) Instead I tossed Debian on it and run 9front in a VM if I need a local CPU. So far it just seems to work including Ethernet (via a dongle) and WiFi.