High quality, modern electronic diode rectifier as replacement for the original Silizum rectifier of all Vespa models with battery up to 1980. The electronic diode rectifier improves the battery charge of the 6Volt models and prevents discharging due to leakage currents. Thus the full voltage of the battery, which is absolutely necessary for ignition, is always available. Due to the small size it fits into the original rectifier housing.