This reviewer's take on the cause of the incident.. He recommends not using most of the sub-tanks available on devices with hybrid top-caps.. Now that a plausible explanation is available, how would "Joe Average" vaper know this when picking gear out in a local shop? I consider myself well-informed on many things vaping-related, but haven't really heard about the pins on many sub-tanks not playing nice with hybrid top-caps until now...
https://www.youtube.com/watch?v=nJKtJ00jSiQ&feature=em-uploademail
Same theory to this previous post of mine:
Found this via IG repost earlier. Perhaps this is the issue with the explosion, says it will cause a hard short.
https://instagram.com/p/0DouFQSXwC/