No idea about the battery, I didn't even think of checking it, however I have had it connected to my artidiag while running and it shows 13.1v.
I think I'll call into the stealers, to see about the coilpacks recall and see if it has been updated to lower the o2 sensor temperature.
I have another modification to do to it, I have the touareg pcv pipe to fit as the one in the cam cover is burping every cycle.