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Amazon.com: DC-DC Converter Module, 36V-72V to 12V Step Down Voltage Converter Module 10A 120W Adjustable Buck Power Supply Module for Voltage Conversion : Electronics
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Amazon.com: Pro Chaser DC-DC 72V 60V 48V Volt Voltage to 12V Step Down Voltage Reducer Regulator 360W 30A for Scooters & Bicycles Golf Cart (30A 360W) : Electronics
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72 volt to 12 volt or 24V DC to DC converter; Marine, railroad, industrial and voltage reducers and 72V/24V DC/DC converters, 205 watts, with common negative ground.
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