The battery Varta D21 is a classic lead-acid battery known for its reliability and relatively long lifespan. The basic parameters of the battery are 61 Ah of capacity and 600 A of starting current. The pole layout 0 means that the positive pole (+) is located on the right side of the battery, looking from the terminal side. This battery has a B13 mounting zone, which means that the lower mounting bracket is located at the bottom of the battery on each side. This is the standard mounting method in almost all European cars.