On a surface of a GaAs substrate, layers to be a top cell are formed by epitaxial growth. The battery includes a negative electrode, a positive electrode, a separator sandwiched between the electrodes, an electrolyte impregnating the separator and being in a fluid communication with the electrodes, and a metal package adapted for containing the electrodes, the separator, and the electrolyte. The guide includes a pattern of shift lever positions corresponding to specific gear ratios of the transmission of the vehicle.