Abstract: A gas detecting system includes a detector having a housing, a sensor module, a controller, energy storage, and a photoelectric conversion component. The photoelectric conversion component may be mounted in or on the housing to provide electrical power to the energy storage while the energy storage powers the detector. Accordingly, the photoelectric conversion component can extend working time of the detector beyond the normal capabilities of the energy storage alone. The gas detecting system may further include a charger that provides concentrated light for charging or operation of the detector.