The 38 year old's vape pen was reportedly a device made in the Philippines that is unregulated and not recommended for beginners.
Tallmadge D'Elia was found by firefighters in the burning bedroom of his family home on May 5.
Tallmadge Wakeman D'Elia suffered burns to 80% of his body.
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The Pinellas County's Medical Examiner ruled the death as accidental.
Reports do not indicate what caused this particular e-cig explosion, but the U.S. Food and Drug Administration claims that e-cigarette explosion incidents can be related to problems with the battery in a vaping pen. It is still unclear what caused the pen to explode. Until the vaping industry takes responsibility for its products, these incidents will continue to occur, and it is likely there will be more deaths. In 2013, Jennifer Ries was awarded $1.9 million when she suffered second-degree burns from an e-cigarette explosion while Los Angeles Superior Court is now investigating 10 civil suits filed across the state by injured e-cigarette users.
There were 195 separate e-cigarette fire and explosion incidents in the United States reported by the media between 2009 and 2016, according to data released a year ago by the US Fire Administration. It said the company had had problems with people cloning their devices and using bad batteries. The vape pen used by D'Elia, a Smok-E Mountain Mech Works "mod"-Vapes.com notes vape mods are modified e-cigarettes or vape pens that "can have built-in batteries and come with atomizer tanks while others need additional parts to function"-did not have safety features, reports WFTS".
"Lithium ion batteries fail in other devices as well, but in a laptop, it's on your lap", he said.
Deputy fire marshal Steven Lawrence, who attended the scene, said vape pens can "become pieces of flying debris and shrapnel".