MV was talking about bringing out an auto version of their VV Box Mod but I don't believe it ever came to fruition. I'm pretty sure that you can safely wire the auto switch into the VV pcb but I would open a ticket and ask them (MV) if it can be done and how to wire it. I bought the 3.7 volt model when it first came out and was unimpressed with it's performance. The auto switch was unreliable and caused the draw to be very airy. It's also prone to flooding. Even if you get it to work, you may not like the end result. If you do manage to build one, I would very much appreciate it if you would post your results. Good luck!