A terminal connection structure for a battery which is electrically connected to a battery terminal includes a terminal plate having an attachment hole and a side plate connected perpendicularly to the plate. A terminal metal member, having a fitting hole corresponding to the attachment hole, is provided at the end of a cable to contact the plate surface by way of a terminal connector. The terminal connector includes a terminal engaging member, integrally comprising a shaft portion and an engaging portion. The shaft is fitted in the fitting hole and the attachment hole so that the terminal metal member is contacted with the plate surface. The engaging portion is substantially L-shaped and projects sidewardly from an end of the shaft, engaging with a rear face of the plate. A nut is screwed on the shaft so that the terminal metal member is provided between the nut and the plate surface.