I have 2x0,7 coils in my mod, and my mod gets hot when i chainvape... But its because my dripper sits flush, the heat travel through half my mod... But nothing is wrong and the battery is nowhere near hot...
Remember you have red hot pieces of metal inthere... Is the heat evenly distributed from the top down or is it the button and nothing else thats warm, if you pull the mod apart is the battery the hottest part?
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M16 helio 0,35
Galileo helio/chimbus 0,5/0,4
Bolt carto tank
Vamo vivi/protank
Kts+ igo-w 0,7