DC-DC Buck Step Down Adjustable Converter 4.5-60V to 3.3V 5V 6V 9V 12V 24V 3A | eBay
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DC DC Step Down Converter 24V 36V 48V 60V to 12V 1A 2A 3A 5A 8A Waterproof 20-72V Convert to 12VDC Buck Car Power Supply - AliExpress
Samlex IDC-200C-12 30v-60v to 12v DC to DC Converter
Car Converter DC 60V(20V~72V) to 12V 15A 180W Buck Power Supply Module/Power