I just want a 5v passthrough battery - nothing else. I don't want the whole kit. It'd be nice to know what my options are - like what mods there are in 5v but I cannot for the life of me find a clear comprehensive breakdown of what's available. It's like pulling teeth. I've tried googling everything from "5v passthroughs" to "complete listing of all e-cig mods" but nothing too informative comes up. It's all vague. The one list I did find did not list the voltages (not even in the specs) as if this information had no bearing on a potential customer's decision. I'm beginning to think that because they know there are so many newbies they deliberately don't make things very clear so that after you spend money and get something that doesn't work for you you end up having to spend even more later and all because of a general lack of understanding that the vendor does not care to provide or make clear. That's where I'm at and I'm not going to make the same mistake. Where can I find a simple list of 5v passthrough batteries to choose from where I can buy just the batt and not the whole kit? Why does this seem so difficult?