I think you need to explain what is wrong with dbus, and if you're trying to delay the bme shutdown to run a script or what.
You can use sysfs instead of dbus or pay someone to watch the status indicator and type a command when it looks low. I have no idea what your requirements are...
Maybe you can figure out how to use conky to do it
http://crunchbanglinux.org/forums/to...ttery-warning/
or QBW
http://wiki.maemo.org/Queen_BeeCon_W...nd_Interceptor