A lithium-ion battery that is too hot to touch, melting, smoking, or on fire, may be in thermal runaway. This can be caused by abusing or misusing the battery, such as dropping, puncturing, or damaging the battery, or exposing it to liquids. For more information, view our video, “Safe Handling of Overheated Lithium-Ion Batteries”: ow.ly/PUow50Uqm9u #ThermalRunaway #OverheatedBattery #BatterySafety #Batteries #PowerTools