I like variable coil that's how I choose my watts and thus my vape. I only need one battery and a simple mod that will not blow up in my face but that's just me. Ever try it yet? If you have, I'd like to hear what you think. If not, give it a try it's a great vape.

At 5V with an 1 ohm coil you get 25 watts (too much for me) for example. And 3.7V at 1 Ohms coils gives us 13.69 watts (still too much for me) BTW

Just check this out :

http://www.ohmslawcalculator.com/ohm...calculator.phpDo the math no... wait... they do it for you

1.1 ohm per inch 32 Kanthal

This is pretty nice:

3.7V 1.4 Ohm Coil gives 9.77857 watts

and 3.7V at 1.5 ohms we get 9.12667 watts sweet for meeeeeee