I'm wanting to learn to build my coils and waqs told when building and using coils under 1.0 that I can only use mechanical mods, well I have the kts telescopic storm and have used it with kanger 2.1 ohm coils and never had a problem...... until today I used a new battery (Panasonic 18650 2900mah 10amp) the second I pushed the button to use it it burnt my finger bad, the battery does not look damaged after I checked and I have been using all the time on my Innokin svd, does anyone know why I had this problem? p.s. it is an unprotected battery which I was told is ok to use because its a new Hybrid and it's only 1.5 months old