Vehicle battery mounting structure

A vehicle battery mounting structure, comprising:

• a battery frame lower member, the battery frame lower member being made of resin, the battery frame lower member being disposed at vehicle transverse direction inner sides of energy absorbing members provided at a lower side of a floor panel, and the battery frame lower member, together with a battery frame upper member, structuring a battery frame, and the battery frame member supporting a battery;
• a lower ductile member having:
• a lower main body portion, the lower main body portion being joined to vehicle transverse direction outer side end portions of the battery frame lower member, and
• lower flange portions, the lower flange portions being fixed to a bottom surface side of the floor panel;
• and
• inclined walls, the inclined walls being formed at the vehicle transverse direction outer side end portions of the battery frame lower member, and the inclined walls being obliquely inclined relative to a bottom plate of the battery frame lower member toward the lower ductile member.