I recently switched from disposables to a PV tank system. I bought it at the mall and am very pleased with what I have. Problem is that I would like to look at tanks, juice, etc on line in order to save money on consumables, but I don't even know exactly what I have here. I'm thinking they are generic parts and that the folks at the mall are being a little vague because they want me to buy only from them. Either way, can someone help me out? The tanks are 1.6 ml, and they told me that they would have to be replaced about every 2 weeks of use. Can you tell from this: - are they single or dual coil? -is this a standard battery/tank size and interchangeable with the ones I see on line? It appears that every supplier calls them something different so I don't know whether they are all interchangeable or not. The battery is manual and not variable voltage, which I think is fine with me, but I'd like to know what my options are, using generic terms instead of what each manufacturer calls their brand. Thanks in advance!

