well i think it will work well with a 1.5 ohm maybe a 1.5ohm dual coil. just the t3 being 2.4 ohm aint going to be so hot. Though like i said the AA's are 2500mah so they could be needing charged who knows. but 2500 mah is as good as a 14500 battery.
2.8V with 2.4ohm is 3.3 watts
5V with 2.4 ohms would be 10 watts