A combined carbon monoxide and smoke detector adapted to fit into the handle of a suitcase or adaptable. The suitcase has wheels and the wheels are coupled to dynamos. Electric power generated by the dynamos is stored in a dynamo battery. The dynamo battery is wired to a charging port of a USB charger such that it is capable of charging the smoke and carbon monoxide detectors. In another embodiment there is a smartphone and a carbon monoxide sensor and a smoke sensor are built into the smartphone and make use of the internal components of the smartphone to sound an alarm is carbon monoxide or smoke are detected. The dock connector of the smartphone receives electrical energy from the dynamo battery to recharge the battery of the smartphone or other electronic device.