just got a coolfire 1 using efast imr high drain battery 18350 and a 2 ohm cartomizer (smoketech). I am finding after 4 or 5 vapes that it gets very warm not hot, above and around the switch and the carto. the carto does not burn though, and vapes fine. I am concerned as I have not experienced this with any other device. is it normal? or should I send it back? also the battery is slightly warm to the touch.
the batteries are new.
the batteries are new.