Wife’s friend woke up to smoke alarms last weekend. A fire had started in attached garage. FD arrived and put it out. Flame damage restricted to one side of garage, but smoke and soot damage throughout the house. The fire appears to have started where several lithium battery powered tools were stored on a wall. Batteries and tools are a lump of melted plastic and metal but nearby boxes were barely charred. Fed told them the residue / soot was toxic and a lot of possessions had to be discarded. The couple was fortunate as no injuries, but a major loss. Not sure if batteries were on charge at the time of fire.