I didn't have any issue with Wifi and sleep on my home Dell XPS 13 9380 running Arch. As for the battery, well I followed the arch wiki recommendations (add a k

I didn't have any issue with Wifi and sleep on my home Dell XPS 13 9380 running Arch. As for the battery, well I followed the arch wiki recommendations (add a kernel startup parameter, and use tlp) and it is ok now but it does not just work out of the box. It is still not on par with Windows (I kept it just in case). I get around 8-9 hours of battery life on Windows while on Linux it is more like 6-7 hours. But it is mostly due to the fact that Chrome/Chromium and Firefox don't support hardware acceleration on Linux and I watch quite a lot of youtube videos. There is a Chromium that uses the video acceleration API (VAAPI) but it comes from the user arch repository, there is now also a snap package (I haven't yet fully tried them).