The Brief Investigators say that a fire that destroyed a Mayfair home was caused by a lithium-ion battery. The battery was connected to a hoverboard in the home's basement, officials said. Investigators say a hoverboard is to blame for the early-morning fire that destroyed a home in Mayfair on Thursday. Dig deeper:Investigators then discovered the lithium-ion battery connected to the hoverboard in the basement, and called in a Hazmat crew. Firefighters say hoverboard and scooter batteries are a growing concern, increasingly involved in fires.