If you're into drones, FPV or RC, then you have lithium batteries. They have become an integral part of remote controlled air- and landcraft. It may be rare, but they do catch on fire The is an insulated double wall steel box that contains the fire and intense heat in case of a runaway battery. The smoke and soot is filtered through a flame arrestor. Specifications: charging space 9.5"x6.5‘’x4‘’outer size 12" x9"x7 weight: 4lbs In the Box: 1* magnetic attached charger stand 1* handle for easy transportation 1* fire proof lid seal and wire ways allow access for charging wires. Don't risk a home fire