this post was submitted on 03 Jul 2026
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This might not help a lot but here is my FW13 story.
I got it somewhere around 2024/2025 and the battery life was very bad. Like a couple of hours tops.
I was sad, but lived with it for a while.
Then when I started using NixOS (love it) the battery life improved dramatically.
I think it is because I configured some Framework-hardware-specific configuration thingy that was made for the device.
So making sure you have the right firmware or whatever really does change a lot.
I don't think it's even close to 18 hours, but it is way better than before.
Also, setting the screen to 60hz instead of 144hz might save you some battery.
Good luck!