A 2D image dataset of EV car battery welds is used to train AI/ML models on weld classification for quality inspection applications or other purposes. Includes 1 zip file with 61,670 greyscale images of 409x40 resolution split in training set [ 43,169 images] validation set [ 9,250 images] testing set [ 9,251 images] and the following 2 classes: 1] OK --> indicating the absence of aesthetical defects 2] KO --> indicating the presense of aesthetical defects