300 Watt Bicycle Generator 3/8" Belt Drive Pedal Power Pulley Dynamo MNS Power MNS Power 300 Watt Air Cooled DC Generator 0 to 40V Output Output Voltage: 0 to 40 Volts DC Nominal Current 15 Amps, Peak Current 20 Amps Max RPM 2600 Mounting Holes: 6mm