06-25-2014, 08:07 PM
The batteries are located in the back of the the helmet, just one nine volt running two fans. It's just enough to get them going. I will probably build my own 12 volt battery out of some nMH batteries (rechargeable), the same kind I use in my RC airplanes. I have a lot of room in my back pack for just about anything so the batterie will go back there.

