Electrical - DC to DC Converters
Marine DC to DC converters are designed to provide stable, efficient voltage conversion and dependable power management for your vessel's electrical system. Engineered for demanding freshwater and saltwater environments, these marine-grade converters safely step up, step down, or regulate DC voltage to ensure onboard electronics and accessories receive the correct power supply. From isolated and non-isolated converters to DC-to-DC battery chargers and voltage regulators, these solutions support multiple battery banks, alternator charging systems, lithium battery installations, navigation electronics, communication equipment, lighting, and other onboard devices. Built with advanced protection against overload, overheating, short circuits, and voltage fluctuations, marine DC to DC converters help improve battery charging efficiency while protecting sensitive electronics. Whether you're upgrading your boat's electrical system or adding new equipment, the right converter delivers reliable performance and long-term efficiency. Featuring premium products from trusted marine brands such as Victron Energy, Mastervolt, and Newmar, our Electrical – DC to DC Converters collection offers the quality and reliability serious boaters expect. Browse our selection today and let our knowledgeable team help you choose the ideal solution for your vessel.
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- Most relevant
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Vendor:Victron Energy
Victron Orion-TR DC-DC Converter - 12 VDC TO 24 VDC - 10A Isolated [ORI122424110]
- $162.81
$191.54- $162.81
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Orion-TR 12/24-10A (240W) Isolated DC-DC ConverterIsolated Model - separate in and out (-) leads Remote On/Off TerminalThe remote on/off terminal eliminates the need for a high current switch in the input wiring. The remote on/off can be operated with a low power switch or for...- $162.81
$191.54- $162.81
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Vendor:Victron Energy
Victron Orion-TR Smart 12/12-18 18A (220W) Isolated DC-DC Charger or Power Supply [ORI121222120]
- $228.42
$268.73- $228.42
- Unit price
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Orion-TR Smart 12/12-18A (220W) Isolated DC-DC Charger or Power SupplyThe Orion-Tr Smart isolated DC-DC charger serves as a DC-DC battery charger or a power supply (also designed for use as a constant voltage source), offering a wide input and output voltage range. This is...- $228.42
$268.73- $228.42
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Vendor:Victron Energy
Victron Orion 24/12-70A DC-DC Converter w/Binding Posts - IP20 [ORI241270030]
- $151.88
$178.68- $151.88
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Orion 24/12-70A DC-DC Converter with Binding Posts - IP20Remote On-Off ConnectorThe remote on-off eliminates the need for a high-current switch in the input wiring. The remote on-off can be.operated with a low-power switch or by the engine run/stop switch (see manual).All Models with Adjustable...- $151.88
$178.68- $151.88
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Vendor:Mastervolt
Mastervolt DC Master 24V to 12V Converter - 12A w/Isolator [81500300]
- $254.43
$345.91- $254.43
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DC Master 24V to 12V Converter - 12A w/IsolatorPower you can rely onThe required voltage for DC current can vary. Some equipment requires 24 V, while onboard equipment usually requires 12 V. For custom DC current, Mastervolt offers a series of compact and made...- $254.43
$345.91- $254.43
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Vendor:Victron Energy
Victron Orion-Tr 12/24-5A 120W Isolated DC-DC Converter [ORI122410110]
- $91.13
$107.21- $91.13
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Orion-Tr 12/24-5A 120W Isolated DC-DC ConverterRemote on/offThe remote on/off eliminates the need for a high current switch in the input wiring. The remote on/off can be operated with a low power switch or by for example the engine run/stop switch (see manual).All models are...- $91.13
$107.21- $91.13
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Vendor:Samlex America
Samlex 20A Non-Isolated Step-Down 24VDC-12VDC Converter [SDC-23]
- $173.82
$217.27- $173.82
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20A Non-Isolated Step-Down 24VDC-12VDC ConverterThis high efficiency switch-mode step-down DC-DC converter converts an input voltage of 24 VDC nominal (range 20 VDC to 35 VDC) to a highly regulated output voltage of 12 VDC nominal (13.8 VDC) at 20 Amps. The SDC-23 DC-DC converter...- $173.82
$217.27- $173.82
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Vendor:Newmar Power
Newmar 32-12-50 DC Converter [32-12-50]
- $1,656.70
$2,198.47- $1,656.70
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32-12-50 DC ConverterConvert 20-50 VDC input to 12 VDC negative ground output for powering communication and navigation equipment on negative ground systems. (See Isolated Series for positive ground applications.)Features: Excellent Regulation: Output voltage maintained within 1% under all line and load conditions within the...- $1,656.70
$2,198.47- $1,656.70
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Vendor:Victron Energy
Victron Orion-Tr Smart 24/12-20A (240W) Isolated DC-DC Charger [ORI241224120]
- $228.42
$268.73- $228.42
- Unit price
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Orion-TR Smart 24/12-20A (240W) Isolated DC-DC ChargerThe Orion-Tr Smart isolated DC-DC charger serves as a DC-DC battery charger or a power supply (also designed for use as a constant voltage source), offering a wide input and output voltage range. This is especially significant in...- $228.42
$268.73- $228.42
- Unit price
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Vendor:Victron Energy
Victron Orion XS 12/12-50A DC-DC Battery Charger [ORI121217050]
- $469.00
$551.76- $469.00
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Orion XS 12/12-50A DC-DC Battery Charger (for marine applications with VHF interference fixed)The Orion XS, engineered from the ground up, redefines DC-DC battery-to-battery charging. Ideal for dual battery systems charged by an intelligent alternator.This device not only ensures top-tier performance but also guarantees the...- $469.00
$551.76- $469.00
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Vendor:Newmar Power
Newmar 32-12-35 DC Converter [32-12-35]
- $1,505.18
$1,996.92- $1,505.18
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32-12-35 DC ConverterConvert 20-50 VDC input to 12 VDC negative ground output for powering communication and navigation equipment on negative ground systems. (See Isolated Series for positive ground applications.)Features: Excellent Regulation: Output voltage maintained within 1% under all line and load conditions within the...- $1,505.18
$1,996.92- $1,505.18
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Vendor:Newmar Power
Newmar 12-12-6i Power Stabilizer [12-12-6I]
- $578.91
$693.28- $578.91
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12-12-6i Power StabilizerFeed sensitive electronics with proper voltage, regardless of the battery condition. This stabilizing converter provides continuous, precisely regulated output over the entire range of a battery’s usable voltage. This prevents subjecting loads to fluctuating input voltage, which can cause shutdown, diminish performance,...- $578.91
$693.28- $578.91
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Vendor:Victron Energy
Victron Orion-Tr 24/12-5 (60W) DC-DC [ORI241205200R]
- $21.87
$25.73- $21.87
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Orion-Tr 24/12-5 (60W) DC-DCFeatures: High efficiency - Using synchronous rectification, full load efficiency exceeds 95% IP43 protection - When installed with the screw terminals oriented downwards Screw terminals - No special tools are needed for the installation Please contact your dealer for any returns,...- $21.87
$25.73- $21.87
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Vendor:Furuno
Furuno 12V-24V DC 16 Amp Converter f/DRS25AX X-Class Open Array - Newmar [NEW-12V-24V-16A]
- $1,708.17
$0.00- $1,708.17
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12V-24V DC 16 Amp Converter f/DRS25AX X-Class Open Array - NewmarDC Converter 12V-24V 16 AmpsWARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to...- $1,708.17
$0.00- $1,708.17
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Vendor:Victron Energy
Victron Orion 24/12-80 DC-DC Non-Isolated Converter w/Binding Posts [ORI241280030]
- $164.03
$192.97- $164.03
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Orion 24/12-80 DC-DC Non-Isolated Converter with Binding PostsThe Victron Energy Orion 24/12-80 DC-DC Converter with Binding Posts is a high-power non-isolated converter designed to convert 24V DC to a stable 12V DC output with up to 80A output current. Featuring heavy-duty binding post terminals,...- $164.03
$192.97- $164.03
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Vendor:Victron Energy
Victron Orion 48/12-60 DC - DC Non-Isolated Converter [ORI481260020]
- $188.33
$221.56- $188.33
- Unit price
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Orion 48/12-60 DC-DC Non-Isolated ConverterThe Victron Orion 48/12-60A DC-DC Converter IP20 is a high-efficiency, non-isolated DC-DC converter designed to reliably convert 48V DC input to 12V DC output, delivering up to 60A of continuous current. Ideal for applications where a robust 12V supply is...- $188.33
$221.56- $188.33
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Vendor:Victron Energy
Victron Orion-TR DC-DC Converter - 12 VDC to 12 VDC - 9AMP Isolated [ORI121210110R]
- $91.13
$107.21- $91.13
- Unit price
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Orion-TR 12/12-9A (110W) Isolated DC-DC ConverterRemote On/Off TerminalThe remote on/off terminal eliminates the need for a high current switch in the input wiring. The remote on/off can be operated with a low power switch or for example the engine run/stop switch. All Models Are Short...- $91.13
$107.21- $91.13
- Unit price
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Vendor:Victron Energy
Victron Orion-TR DC-DC Converter - 48 VDC to 24 VDC - 16AMP Isolated [ORI482441110]
- $287.96
$338.78- $287.96
- Unit price
- / per
Orion-TR 48/24-16A (380W) Isolated DC-DC ConverterIsolated Model - separate in and out (-) leads Remote On/Off TerminalThe remote on/off terminal eliminates the need for a high current switch in the input wiring. The remote on/off can be operated with a low power switch or for...- $287.96
$338.78- $287.96
- Unit price
- / per
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Vendor:Samlex America
Samlex Step-Up DC-DC Converter - 7A - 9-18V Input - 24V Output [STEP7]
- $188.69
$235.86- $188.69
- Unit price
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Step-Up DC-DC Converter - 7A - 9-18V Input - 24V OutputFeatures: Step up from 12VDC to 24VDC at 7 Amps DC Switch Mode design CE approved High Efficiency Over-current protection Over-voltage, Reverse Polarity protection 6.3 mm push-on flat pin connectors Specifications: Input: 9-18 VDC...- $188.69
$235.86- $188.69
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Vendor:Mastervolt
Mastervolt Mac Plus 12/48-15 [81203205]
- $807.62
$1,096.36- $807.62
- Unit price
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Mac Plus 12/48-15Boost Your Service BatteryToo often, service batteries don’t get the charge they need. This is a problem made worse by smart alternators and start/stop systems, which result in slow and insufficient charges. The Mac Plus 48V and 36V solve that problem. With...- $807.62
$1,096.36- $807.62
- Unit price
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Vendor:Dolphin Charger
Dolphin Charger DC-DC Converter - 12/36V - 20A [99204]
- $1,027.75
$1,428.01- $1,027.75
- Unit price
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DC-DC Converter - 12/36V - 20AYour boat has a 12V alternator, and you need to charge a 24V or 36V battery “on the run”? Dolphin has the solution. Our boosters are true DC/DC chargers with a 3-stage smart charge feature. Compatible with 4 different...- $1,027.75
$1,428.01- $1,027.75
- Unit price
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![Victron Orion-TR DC-DC Converter - 12 VDC TO 24 VDC - 10A Isolated [ORI122424110]](http://www.dbmarinesupplies.com/cdn/shop/files/92885XL_533x.jpg?v=1682804113)
![Mastervolt DC Master 24V to 12V Converter - 12A w/Isolator [81500300]](http://www.dbmarinesupplies.com/cdn/shop/files/57565XL_533x.jpg?v=1682688549)
![Victron Orion-Tr Smart 24/12-20A (240W) Isolated DC-DC Charger [ORI241224120]](http://www.dbmarinesupplies.com/cdn/shop/files/103510XL_533x.jpg?v=1714623340)
![Victron Orion XS 12/12-50A DC-DC Battery Charger [ORI121217050]](http://www.dbmarinesupplies.com/cdn/shop/files/108162XL_533x.jpg?v=1742993081)
![Newmar 32-12-35 DC Converter [32-12-35]](http://www.dbmarinesupplies.com/cdn/shop/files/102305XL_533x.jpg?v=1744851057)
![Victron Orion 24/12-80 DC-DC Non-Isolated Converter w/Binding Posts [ORI241280030]](http://www.dbmarinesupplies.com/cdn/shop/files/112829XL_533x.jpg?v=1781581144)
![Victron Orion 48/12-60 DC - DC Non-Isolated Converter [ORI481260020]](http://www.dbmarinesupplies.com/cdn/shop/files/112827XL_533x.jpg?v=1781581143)
![Mastervolt Mac Plus 12/48-15 [81203205]](http://www.dbmarinesupplies.com/cdn/shop/files/102913XL_533x.jpg?v=1743123242)