A portable cartridge that stores a fuel for use with a fuel cell system includes one or more disposable components for use by the fuel cell system. Replacing a fuel cartridge, e.g., when fuel is depleted from the current cartridge, also then services the disposable component for the fuel cell system. Thus, the disposable component is included on a fuel cartridge, but used by a fuel cell system when the cartridge and a package that includes the system are coupled together. The disposable component may include: an inlet filter that regulates passage of gases and liquids into the fuel system, an outlet filter that cleans fuel cell system exhaust gases, a sensor on the inlet air stream to the fuel cell system; a sensor on the exhaust; a desiccant that sinks moisture from within the fuel cell system package; or a fuel absorbent that soaks fuel between connectors on the fuel cartridge and the fuel cell system.