This is the Un-Painted XL Bat-Safe, the simple solution to safe charging of LiPo batteries containing lithium.The BAT-SAFE 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. BAT-SAFE is lightweight, easy to use and inexpensive. It has a magnetic attached charger stand, a handle for easy transportation, a fire proof lid seal and wire ways allow access for charging wires.