Usings Gary's above links I have made some quick and dirty changes to the iMiev APP to take Leaf battery data and work with the ELM327. Needs more work to clean up the display to display all 96 CP voltages. There should be max/min values on the y-axis and the x-axis only goes from CP 1 to 88. I took two traces to see if the data would be the same or close.
Ok, I see now that it only goes up to CP 79 on the ATT Fusion 2 (on the Nexus 7 it goes to 88). So the bars and/or labels for 80 to 88 are probably messing up the y-axis label. Should be easy to fix. For some reason my Nexus 7 running this program will not open a serial connection. Other programs on the Nexus 7 do link to the ELM327 so seems like a Basic4android issues.
These pictures were taken of my ATT Fusion 2 Prepaid phone. Only $39 at Fry's. Don't use the phone part so no service (always in Airplane mode).
It appears that the white background is the problem. The background should be black as it is on the test data before the Leaf data is read in.