By posting these photos, we would like to warn you against online tutorial videos and self repair HV battery. In a hybrid car, we deal with high voltage, and thus, you need to have high-voltage repair qualifications so as not to endanger yourself and others. Lack of professional knowledge about the work of cells in a HV battery and repair “on your own”, most often results in permanent damage to the Toyota HV battery (eg) or other elements of the car’s installation.