Thanks PVM, I am reporting the battery level without problems, but I can't see the history of the battery level. Ideally a graph just like the other output form the sensor. I have a solar powered sensor with a battery you see and want to be sure it's getting enough power during the day/night cycle.

I've not been able to figure out if graphing or extracting battery level time data is possible. Anyone know of it is, or how to get at the raw data with a JSON call?
Thanks