Battery arrangement structure and saddle-riding type vehicle

A battery arrangement structure comprising:

• a pair of left and right rear frames disposed in a rear section of a vehicle;
• and
• a battery disposed between the pair of left and right rear frames, wherein the pair of left and right rear frames include a pair of left and right first rear frames extending upward from a lower portion of the vehicle, and a pair of left and right second rear frames extending rearward from upper end portions of the pair of left and right first rear frames,
• the battery arrangement structure further includes a pair of left and right rear extension portions extending rearward from lower sides of the pair of left and right first rear frames, and an accommodating section disposed between the pair of left and right first rear frames,
• a power unit-supporting portion which swingably supports a power unit is provided at rear portions of the pair of left and right rear extension portions, the battery is disposed between the pair of left and right second rear frames and above the power unit-supporting portion,
• the battery arrangement structure further comprises a pair of left and right battery-supporting portions extending rearward from lower portions of the pair of left and right first rear frames,
• the pair of left and right battery-supporting portions are disposed below the accommodating section and the battery,
• the pair of left and right second rear frames include front extension portions extending forward from upper end portions of the pair of left and right first rear frames, and
• the front extension portions overlap the vertically intermediate portion of the accommodating section in a side view.