US Patent 10926114 Removable battery cartridge for facemask

A power supply for an item of personal protective equipment and a method and system for removably coupling the power supply to the item of personal protective equipment, such as a respirator mask. The removable battery cartridge is attached to the mask body in the user's chin area, below the location at which a respirator would be or is attached. Thus, the power supply (battery cartridge) is out of the user's way and is at a location that allow the user to couple or uncouple the cartridge from the mask quickly and easily, even when the user is wearing gloves. In one embodiment, a mask body includes a lower surface and power supply that is removably couplable to the mask body lower surface.