A charging and discharging inspection device for a thin secondary battery, the thin secondary battery comprising a battery package and thin plate-shaped positive and negative electrode lead terminals (2, 3) protruding from one side of the battery package, the charging and discharging inspection device comprising: a support member that supports a plurality of the thin secondary batteries in a stacked state; and contact probes (23, 24) arranged facing and being contactable with the respective lead terminals (2, 3) of the plurality of the thin secondary batteries supported by the support member, wherein the support member and the contact probes (23, 24) are adapted to approach or separate from each other such that the contact probes (23, 24) can be simultaneously brought into contact with or separated from the respective lead terminals (2, 3) of the plurality of the thin secondary batteries; wherein the lead terminals (2, 3) respectively have front end surfaces located in a protruding direction of the lead terminals from the one side of the battery package and formed with a width corresponding to a plate thickness of the lead terminals; wherein the contact probes (23, 24) respectively have: substantially V-like shaped receiving grooves defined by opposing tapered surfaces and increasing in width toward the corresponding lead terminals so as to receive therein the corresponding lead terminals; and flat surfaces formed between innermost parts of the opposing tapered surfaces with a width larger than that of the front end surfaces of the lead terminals (2, 3) so as to be contactable with the front end surfaces of the corresponding lead terminals; and wherein, when the contact probes (23, 24) are simultaneously brought into contact with the respective lead terminals (2, 3) of the plurality of the thin secondary batteries by approaching operation of the support member and the contact probes (23, 24), the contact probes (23, 24) are electrically connected to the respective lead terminals (2, 3) by surface-to-surface contact between the flat surfaces of the contact probes (23, 24) and the front end surfaces of the lead terminals (2, 3). a support member that supports a plurality of the thin secondary batteries in a stacked state; and contact probes (23, 24) arranged facing and being contactable with the respective lead terminals (2, 3) of the plurality of the thin secondary batteries supported by the support member, wherein the support member and the contact probes (23, 24) are adapted to approach or separate from each other such that the contact probes (23, 24) can be simultaneously brought into contact with or separated from the respective lead terminals (2, 3) of the plurality of the thin secondary batteries; wherein the lead terminals (2, 3) respectively have front end surfaces located in a protruding direction of the lead terminals from the one side of the battery package and formed with a width corresponding to a plate thickness of the lead terminals; wherein the contact probes (23, 24) respectively have: substantially V-like shaped receiving grooves defined by opposing tapered surfaces and increasing in width toward the corresponding lead terminals so as to receive therein the corresponding lead terminals; and flat surfaces formed between innermost parts of the opposing tapered surfaces with a width larger than that of the front end surfaces of the lead terminals (2, 3) so as to be contactable with the front end surfaces of the corresponding lead terminals; and wherein, when the contact probes (23, 24) are simultaneously brought into contact with the respective lead terminals (2, 3) of the plurality of the thin secondary batteries by approaching operation of the support member and the contact probes (23, 24), the contact probes (23, 24) are electrically connected to the respective lead terminals (2, 3) by surface-to-surface contact between the flat surfaces of the contact probes (23, 24) and the front end surfaces of the lead terminals (2, 3).