Abstract: The invention relates to a charging device (1) for charging an energy store (2) with a power generation device (3), a charging device (4) and further components, wherein the power generation device (3) is formed by a heat source, comprising a least one burner (8) connected to a fuel supply line (10) and a thermoelement (9) and a burner (8), a heating device (31) and a nozzle (20) for such a charging device (1). According to the invention, a constant stable combustion and allowing a self-sustaining evaporation process can be achieved, wherein the power generation device (3), the charging device (4) and the further components are arranged in a common housing (5), wherein an evaporator (28) for the supplied fuel is arranged in the lower part of a burner housing (19) for the burner (8) and a back wall (14) for the housing (5) is designed as element for drawing off the heat.