Abstract: The present invention relates to a molded article obtained by injection molding of a resin composition which comprises a thermoplastic polyester resin and a glass fiber and satisfies the following properties (1) and (2), wherein the molded article satisfies the following property (3): (1) the resin composition has a melt viscosity of 60 Pa·s or less at a temperature of 260° C. and a shear rate of 9700 sec?1; (2) the resin composition has a crystallization temperature of 185° C. or higher at a temperature-lowering rate of ?25° C./minute; and (3) the molded article has a bending strength-retaining ratio (%) of 85% or more when it is treated under conditions of 85° C. and 90% RH for 1,000 hours.