I installed batti to see what will happen and like you also got error only different:
Code: Select all
[root@archpup ~]# batti
Neither UPower nor DeviceKit.Power could be initialized!
This can have multiple reasons.
Here is the error for UPower:
org.freedesktop.DBus.Error.Spawn.ChildExited: Launch helper exited with unknown return code 1
And this is the error for DeviceKit.Power:
org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.DeviceKit.Power was not provided by any .service files
If you want my suggestion try qbat from AUR (package is only 200 KB). If you don't want to compile let me know, and I will upload package for you later.