In a Facebook post, Fire officials are warning residents about the potential dangers of lithium-ion batteries after two incidents involving hoverboards on the charger. The Chartiers Township Fire Department said a family who lives in the Piatt Estates development in Chartiers Township was woken up by their smoke alarms last Friday. When firefighters arrived, they found a garage full of black smoke which was caused by a small fire that started from the hoverboard’s lithium-ion battery pack – which was on a charger. Coincidentally, they say, another resident in the same development woke up to find their hoverboard, which was also on the charger, had burned overnight. They say the original chargers for the hoverboards were being used in both incidents. No one was hurt. (Photo courtesy of Chartiers Township Fire Department)