Amazon.com: 24 to 12V Converter 40 Amp - DC 24V to 12V Power Converter Car Truck Electric Inverter Voltage Reducer Step-Down Transformer(40A/480W) : Automotive
12V DC to 16V or 19V or 24V DC Power Converter -DD90M
Amazon.com: 24v to 12v Converter, Step Down Converter 30A 360W for Heavy Duty Truck Car Power Reducer Converter for Auto Car Truck Vehicle Boat Solar System etc.(DC15-40V Inputs) : Electronics