I got 2 of the Black Edition kayfun light clones that Vaper Joe advertised a while back. I built a 1.3ohm micro coil on one of them but it had a lot of wicking problems. I has working on figuring it out while using it was on my Chi You clone. Well I got fed up with it and sat it down for a while. What I didn't know was that my Panasonic battery's wrapper had worn a hole in the bottom, leading to a auto fire situation with the design of the switch. 
I come back about 45 mins later to my mod sitting in a puddle of juice. I pick it up and can barely touch the kayfun since it is so hot. I quickly pull out the battery and set the mod aside to cool down. Surprisingly the battery is not that hot to the touch, I test it with my MM and it reads 2.7v. It was a pretty much fully charged 2900mah battery. The voltage was still above the 2.5v min on the battery so I let it cool down and charged it up, it seem to be fine.
Once the kayfun cooled down I took it apart to check the damage. The positive part of the build deck is now severely discolored, looks like I took a torch to it. The insulator now had cotton melted into it, and looks a little black in some spots but still functions. The coil looked like it had been running for a week and the cotton wick was solid black. I cleaned it up and fixed the wicking issue by making the juice channels deeper. It now works great and no bad taste from the insulator.
I guess the moral of the story is to always keep a close eye on the condition of your battery's. Well that and the Chi You really need some insulation on the switch. I was also wondering if that insulator is still safe to be using after melting a little? I am a little worried that this level of heat might have changed it chemically.
I come back about 45 mins later to my mod sitting in a puddle of juice. I pick it up and can barely touch the kayfun since it is so hot. I quickly pull out the battery and set the mod aside to cool down. Surprisingly the battery is not that hot to the touch, I test it with my MM and it reads 2.7v. It was a pretty much fully charged 2900mah battery. The voltage was still above the 2.5v min on the battery so I let it cool down and charged it up, it seem to be fine.
Once the kayfun cooled down I took it apart to check the damage. The positive part of the build deck is now severely discolored, looks like I took a torch to it. The insulator now had cotton melted into it, and looks a little black in some spots but still functions. The coil looked like it had been running for a week and the cotton wick was solid black. I cleaned it up and fixed the wicking issue by making the juice channels deeper. It now works great and no bad taste from the insulator.
I guess the moral of the story is to always keep a close eye on the condition of your battery's. Well that and the Chi You really need some insulation on the switch. I was also wondering if that insulator is still safe to be using after melting a little? I am a little worried that this level of heat might have changed it chemically.
