Automatic 6 &12 Volt settings turn off at full charge and turn back on if battery needs more power.; LED Digital Display indicates charging voltage, amperage, charge time and countdown for start function.; Continuous rating 12V 15/2 Amps; 100A Engine Start 12V; Automatic bad battery detection; Automatic 6V position for lower voltage .requirements; Designed for Standard, AGM, GEL batteries; Fourâ€Color Retail Packaging