Alright, ECF, I recieved my KTS and it came with two batteries, they're marked as kamry 18650, not much other information on them. I recently put both batteries in my mod after their first charge and the firing button gets hot and I notice some of the plastic that is on the batteries are melted after I take the batteries out to look at them. Is my mod bad, or did I just get bad batteries? I'm very scared of these batteries exploding, and I don't want this to ruin my experience with vaping. Can you guys suggest any solutions or reasons for my batteries/mod getting hot? Any input would be awesome!!