A wheeled transport device includes a body having a compartment configured to contain goods. A start-time target voltage is set so as to avoid the overcharged state of the secondary cell. Separation of liquid phase out of the flowstream is provided without additional pressure schemes or solvent extractions imposed on the stream. The size of a journal data element stored in a journal area based on the set write unit size is the write unit size. The main circuit is capable of operating the first and second transceiver circuits concurrently and handing-over communication for the call from the first transceiver circuit to the second transceiver circuit.