No mention of batteries being used incorrectly.

Heather Boyd, 34, was airlifted to a hospital Saturday after the device exploded while she was sitting in her car at a parking lot in Herndon, Virginia, authorities told FOX5DC.

Shes screaming, Im burning, Im burning, and I didnt understand how bad it was until I saw her hands, but her entire index finger right here was cracked open and it was pretty bad, said Dennis Whitaker, her boyfriend.