I'm wondering what all it will fit on. They show it on different APV's?
For on top of the Kicklet -
"Cap accepts most any 510 atomizer, rebuildable, tank and also Ego C and Ego Tank style atomizer" - so just about anything will fit on top of it, just be cautious about ohm or resistance capability with a variable voltage device.
Power source - The description doesn't go into much detail or explanation, but any battery or big-battery holder with a 510 connector will allegedly work with one of these. I'm not sure that this would work or be recommended for an ego battery.
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This could be a game-changer for some people who already have a mechanical mod that a Kick wouldn't fit into, for example an AltSmoke BB or Alpha, Reo Mini, GGTB, Precise, Mako, E-Power, or a ProVape-1. It doesn't say, but I would think high drain, or IMR, batteries would work best with this.
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** Upon further review, I see now that this apparently is for 18350 or bigger batteries. 