Under-seat structure for a motorcycle

A motorcycle (10) with a seat frame (10) and seat (27) attached to a seat post (21). The seat frame (63) is covered with the seat (27) as viewed from above and is structured so as to hold an article in an exposed state thereon to form an article accommodating space below the seat (27). The rear wheel (23) of the motorcycle (10) is driven by a motor to which power is supplied from a battery (18). The voltage of the battery (18) is converted by a charging and voltage conversion section (25) to supply power to electrical equipment (26). The charging and voltage conversion section (25) is attached in an exposed state to a vehicle body frame (11). A battery (18) for supplying power to a motor is provided with a charging and voltage conversion apparatus (25) for charging the battery (18). A charging cable for energizing the charging and voltage conversion apparatus (25) is disposed in a hollow portion of a vehicle body frame (11).