Combustible Hoverboards Still Out There

Back in 2016, the Consumer Product Safety Commission recalled thousands of hoverboards due to a problem with lithium ion batteries.  The batteries would short circuit and cause the hoverboards to ignite.  Because most of the brands used cheap materials and were made overseas, the market pretty much disappeared overnight.  However, hoverboards that have some age on them are still in use.  Recently, one was encountered in the investigation of an apartment fire.  The condition of the hoverboard is shown below.  Spontaneous ignition of the hoverboard was determined to have been the cause of the fire.  More specifically, the lithium ion batteries  appeared to have self-short-circuited resulting in excessive heat buildup (thermal runaway) that ultimately led to the ignition of the product.  If you have an older product, it is recommended that you replace the batteries with batteries or a battery pack certified by Underwriters Laboratories (UL).  Make sure that the batteries or battery pack has been tested according to UL standard 1642 or 2054.  The product should carry a label showing what standard has been met.   For new products made this year, 2020, the product should have been tested according to UL standard 2272.  Look for a label on the product indicating that the product has been certified accordingly.       

About R.J. Hill, P.E.
R. J. Hill is the author of two blogs: R.J. Hill Consulting and the Descendants of James Alexander Hill. Mr. Hill is a registered professional (mechanical) engineer with 42 years of experience, 37 years in private practice. Please visit www.rjhill.com to see the kinds of forensic investigations that Mr. Hill performs.

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