I'll just say there's a reason I wrote the app instead. 
You can sort of do something similar if there's only one particular event (or few) that you care about in RM, but it's different approach compared to checking this metadata on the device object itself, which is not accessible from RM.
And as others have alluded to, one reason I created this in the first place is that battery reporting, especially for lithium batteries common in home automation devices, is notoriously unreliable. (I don't even bother looking at these values anymore, just the app.)
Adding on to this, it would keep things cleaner as well if you used the quote feature and consolidated multiple successive replies into the same post (fewer actual posts to scroll through total, plus an easier view of what you're responding to; you can quote more than one post in the same reply, like I did with Bobby's in this one).
