Dave. Think that depends on if you want to go with an 18650 battery and a booster or 2X3.7 batteries and a regulator and a way to select the different voltages etc...

I don't know about the switches and looking at information myself (for other projects, I am NOT a modder!). However, I commend you at looking to expand the line. I have often drooled over the precise, but it has one thing I DON'T like: the switch on the end.
Maybe it is just because I haven't tried it and the fact that my hands to have the greatest range of motion and therefore cramp easily, but I have tried to contort my hand on my 510 to try and push a button on the end and it just hurts too much after a couple of minutes.
I would love a touch sensor somewhere on the outside body. I think with the stainless steel and brass it could be recessed and made to look totally awesome with the precise. But that is my![]()



I refuse to use stack batteries because those batteries are not meant for stacking unless the user uses the AW line but I dont know of any that are just 3v.
I have both a touch switch mod and a variable voltage "box" (far from a box) mod in the proto-type stage. I think you'll like them both!
Thanks for the input everyone, i truly appreciate it! A passthrough isn't a bad idea either and has been something i'm kicking around for quite some time...
I have both a touch switch mod and a variable voltage "box" (far from a box) mod in the proto-type stage. I think you'll like them both!
I used this one for the adjustable voltage in the mod I built and it works great.
3A Adjustable step down switching voltage regulator
I'm holding off on my next mod which I want to be an 18650 until I see your touch sensor mod.
Is this gonna be a long wait?