I was gonna say too, you'd get much better vapor production and battery longevity if you raised the volts. Or you can make a 1.5-1.9 ohm coil and get great vapor, but the battery wouldn't last as long compared to a 3ohm coil with high volts (like 4.8ish volts, don't quote me on that), but you have a MOD which should last you at 3.7 volts with a 1.8 ohm coil which is still about the same vapor production as 4.8 volts with a 3ohm coil.