I don't know if anyone else has attempted to do this other than myself, but I just bored out my dse905 to fit the wider RCR123 3.0V batteries. Instead of having 1 3.7V battery my dse905 is not fitted with 2 3.0V batteries, which of course means that I am now vaping my dse905 at 6 volts. This is really cool, it might have been obvious to most people but I just thought of it today. I went to my grandpas drill press and bored out the body for the wider 3.0 volt batteries. I'm still experimenting a little bit here but so far I'm loving it. I got spoiled by the higher voltage of my passthrough and I am currently waiting to buy a GG, so in the mean time i'm vapin 6 volts on my 905 haha. Just seeing what you guys think or if anybody has done this that you know about.