A portable power source for starting a variety of outdoor power equipment, particularly a portable generator. The portable power source generally includes a housing, an electrochemical power supply, a switch, and a connector connected to the switch. The switch may be electrically connected to the electrochemical power supply and, using a conductor (e.g., a cable), the connector is operable to be electrically connected to a starter motor associated with the outdoor power equipment. The portable power source is adapted to be used as a primary power source and as an auxiliary power source. The portable power source can also includes an integrated light, an air compressor, a power supply indicator, and one or more inputs and outputs to receive and provide direct current ("DC") and alternating current ("AC").