I have an XPS 13 9370. It's still chugging along great on Linux. No real slowdowns. Drives an external 4k monitor with no lag or issues. Like you, I've had to replace the battery... 2-4 times by now. A $30 battery every 2 years seems like a pretty reasonable price to keep this champ running. It looks like the framework may be my next laptop though. I've been watching them for a while now. That or system 76.