For those interested, I found a 6-AA battery holder here: (Since I can't post links yet, just google Thomas Distributing and go to the battery holders link) 6 AA NiMH @ approx 1.2V each = approx 7.2V output. Great if you're already an avid NiMH fan and you have a charger and whatnot. I'm going to try running this to the 9V plug but with an inline switch, see how it goes!