E
----
I x R
Ohm's Law: E is voltage, I is current, R is resistance.
To calculate amperage or current draw, you divide your voltage by your resistance. In you case, your highest voltage would be 4.2v with a battery fresh off the charger, without using a Kick. So, to calculate the current draw, the formula would be: 4.2(V)/1.2(ohms) which is 3.5 amps. When you fire the
mod with that coil you will never draw more than 3.5 amps, which is well withing the current limits of your AW 18650 battery.