Get a second hand business laptop (dell latitude, lenovo thinkpad, hp elitebook), replace battery where needed, install linux yourself.
If needed you can pop by the seller with a USB drive with Ubuntu or suchlike to quickly test compatibility.
Business laptop because of decent parts and guaranteed to be self serviceable.
Great news!
I’ve upgraded without issue on my own instance, lemmy.zaggy.nl, it’s open for testing, break away, I have snapshots.
I apologize for the ongoing nonsense topics and Dutch.
Get a second hand business laptop (dell latitude, lenovo thinkpad, hp elitebook), replace battery where needed, install linux yourself. If needed you can pop by the seller with a USB drive with Ubuntu or suchlike to quickly test compatibility. Business laptop because of decent parts and guaranteed to be self serviceable.
As for power saving, I saw this pop by a while ago: https://medium.com/@amanusk/an-extensive-guide-to-optimizing-a-linux-laptop-for-battery-life-and-performance-27a7d853856c