Still no mention of the resistance on the coil. This RTA is not for sub ohm builds. So many possibilities of what could have gone wrong here. The pictures in the thread are not loading for me but from the conversation ensued. OHM METER A MUST WITH REBUILDABLES ESPECIALLY WITH MECH mods. The other point is that this atty is really only designed to go up to 20 watts if being used properly. Build your coils to achieve this when your batteries are fully charged.