Smart 36V Lithium DC-DC Charger (12V to 43.8V 13A)
- Input / Output12V DC → 43.8V DC
- Rated Amperage13A Continuous
- Protection IndexIP67 Waterproof Potted
500+
Standard Converter Models
130+
Global Export Markets
IP68
Submersible Marine Grade
5 Pcs
Flexible OEM Trial MOQ
Factory-Direct Selection
Featured Marine & Industrial DC-DC Power Modules
High-efficiency buck, boost, buck-boost stabilizers and fully potted battery chargers engineered for reliable 24/7 onboard duty cycles in harsh marine saline environments.
Isolated 18–75V Wide Input to 24V 5A Marine Module
- Input Window18–36V / 36–75V DC
- Isolation Rating1500V DC Galvanic
- ApplicationNMEA Bridge & Radar
1500W Dynamic Buck-Boost Voltage Stabilizer (RS485)
- Input Range10–60V DC Ultra-Wide
- Configurable Rails12V / 24V / 28V / 48V
- Telemetry InterfaceRS485 Industrial Bus
24V to 12V 100A High-Current Step-Down Buck Regulator
- Input → Output24V → 12V (85A–100A)
- Efficiency CurveUp to 96% Thermal Eff.
- Enclosure BuildDie-cast Aluminum Fin
12V to 48V 20A Waterproof Boost DC-DC Step-Up Converter
- Input → Output12V DC → 48V DC 20A
- Total Capacity960W Peak Surge
- ProtectionOver-Temp, Reverse Polarity
400W Multi-Stage Waterproof Battery-to-Battery Charger
- Wide Input10–36V DC Alternator
- Configurable Profile14.6V / 29.2V / 43.8V CC/CV
- IntegrationSmart Marine Alternator Ready
600W Heavy-Duty Marine Vessel Battery Charger
- Output Channels12V / 24V / 36V / 48V Multi
- EnvironmentalIP65 Salt-Spray Tested
- Efficiency>93% at Full Operational Load
72V / 96V to 24V 20A Electric Propulsion Converter
- Input Tolerance30–90V DC Continuous
- Output Regulation24V ±1% Precision Rail
- Thermal DissipationEncapsulated Solid Epoxy
Engineering Whitepaper • Market Dynamics
Engineering Standards for Marine DC-DC Power Architectures in Germany
The German maritime equipment sector operates under strict technical directives enforced by classification societies such as DNV (incorporating legacy Germanischer Lloyd), the Federal Maritime and Hydrographic Agency (BSH - Bundesamt für Seeschifffahrt und Hydrographie), and DIN EN 60945 standards. As commercial navigation on the Rhine, Elbe, and Weser corridors migrates toward diesel-electric hybrid and zero-emission battery propulsion, auxiliary DC-DC conversion architectures have evolved from basic peripheral accessories into mission-critical safety links.
"Naval architects in Hamburg, Bremen, and Kiel require auxiliary DC-DC converters to maintain strict galvanic isolation (>1500V DC) between high-voltage propulsion banks and sensitive 24V NMEA navigation electronics, entirely preventing common-mode ground circulating currents that corrode vessel hulls via stray-current electrolysis."
Modern vessels utilize distributed low-voltage microgrids where primary energy banks (often configured at 48V, 72V, 96V, or higher DC bus voltages using Lithium Iron Phosphate - LiFePO4 cells) must seamlessly interact with conventional 12V and 24V nautical systems. Shenzhen Eltrum Electronic Co., Ltd., leveraging over a decade of design expertise, bridges this gap for German system integrators by supplying custom-engineered, fully encapsulated DC-DC buck, boost, and buck-boost power supplies designed for continuous industrial operation.
Unlike standard off-the-shelf commercial electronics, our marine-rated DC-DC converters feature hermetic polyurethane potting, extruded aluminum heat sinks with optimized convection thermal dissipation, and comprehensive EMI filtering compliant with European EMC Directive 2014/30/EU. This guarantees that bridge electronics, AIS transponders, satellite communications, and precision depth sounders operate without radio frequency noise or unexpected voltage brownouts caused by heavy hydraulic thruster actuation.
Factory Capabilities
Why German OEMs & System Integrators Partner with Eltrum
Combining Shenzhen's high-speed prototyping and agile production ecosystem with stringent quality control aligned with European engineering expectations.
ISO 9001 Certified Quality Infrastructure
Every power unit is assembled under stringent ISO 9001 processes in our 3,000m² Shenzhen manufacturing base. Products undergo 100% full-load automated burn-in testing, high-pot isolation validation, and thermal imaging checks before dispatch, ensuring defect rates remain below 0.18%.
Agile OEM / ODM & Buyer-Label Engineering
Our in-house R&D team customizes input voltage windows (e.g., 8–90V ultra-wide), custom CC/CV lithium charging algorithms, RS485 / CAN telemetry registers, and custom automotive-grade water-sealed wire harnesses with Deutsch or Amphenol connectors tailored to specific vessel requirements.
Low Barrier Prototyping & Rapid Logistics
Recognizing the rigorous testing cycles demanded by German technical departments, we maintain a sample MOQ starting from just 5 units on standard converters. Sample batches ship in as little as 3–5 working days via expedited air cargo, complete with full inspection datasheets and CE/RoHS dossiers.
Field Implementations
Localized Marine Application Scenarios Across German Waterways
Demonstrated reliability in demanding nautical, offshore wind, and commercial transport operations across the North Sea, Baltic coast, and German inland canal networks.
Inland Commercial Barges (Binnenschiffe)
On busy transit corridors along the Rhine and Danube, our 24V-to-12V buck converters supply stable power to navigational radar, ECDIS charts, and tachograph recording instruments from massive 24V starter battery banks without voltage interruptions.
Offshore Windfarm Crew Vessels (CTV)
Operating out of Cuxhaven and Emden, CTV operators utilize our IP68-sealed isolated DC-DC modules to isolate high-vibration engine telemetry and radio stations from erratic voltage spikes produced by main alternator coupling.
Electric Passenger Ferries (Elektrofähren)
Municipal clean-transit initiatives in Berlin (BVG) and Lake Constance (Bodensee) integrate our 1500W buck-boost converters to step down 72V/96V main battery banks into clean 24V auxiliary power for steering servos, bilge pumps, and LED cabin arrays.
Strategic Foresight
Emerging Technology Trends in the German Maritime Sector
Navigating structural transitions toward decarbonization, strict emission zones, and intelligent digital energy management.
Green Shipping Mandates
Transition to High-Energy LiFePO4 Storage
With Germany supporting European Green Deal goals and zero-emission port zones, marine builders are actively phasing out lead-acid batteries. LiFePO4 chemistry presents flatter discharge curves and sensitive charging requirements, creating surging demand for smart battery-to-battery (B2B) DC chargers that prevent alternator burn-out.
Condition Monitoring
Integration of RS485 & Industrial IoT Telemetry
Shipboard engineers increasingly specify power converters capable of transmitting real-time voltage, current, and internal heatsink temperatures directly to centralized Programmable Logic Controllers (PLC). Eltrum’s RS485-enabled buck-boost family allows predictive maintenance alerts well before critical auxiliary failures occur.
Supply Chain Resilience
Direct Factory Sourcing for Supply Security
German distributors and OEMs are re-evaluating tiered supplier middleman models. Partnering directly with audited ISO 9001 certified manufacturers like Eltrum enables German engineering teams to lock in bespoke customization, reliable warranty backing, and stable long-term component availability without regional middleman margins.
Knowledge Base
Frequently Asked Questions by German Engineering & Procurement Teams
Key considerations regarding compliance, certifications, galvanic isolation, and logistics for German maritime buyers.
How do Eltrum DC-DC converters comply with German and EU electromagnetic compatibility (EMC) regulations?
All our power supplies and DC-DC converters are engineered and tested in accordance with the European EMC Directive 2014/30/EU and Low Voltage Directive (LVD) 2014/35/EU, carrying valid CE and RoHS conformities. For maritime and communication-dense installations (such as bridge applications where DIN EN 60945 standards apply), our units feature multi-stage common-mode and differential-mode LC filtering along with solid aluminum shielding to avoid interfering with marine radios, GPS, or AIS receivers. Test certificates and Declaration of Conformity (DoC) documents are supplied upon request.
Why is galvanic isolation critical for metal and aluminum hull vessels in North Sea waters?
In metal or aluminum hull vessels common in German shipbuilding, non-isolated converters share a common negative ground rail between input and output. Any minor voltage differential or accidental short on a peripheral device can send stray DC return currents travelling through the vessel hull to seawater. This triggers rapid galvanic and electrolytic corrosion of the hull and stern drive fittings. Eltrum's Isolated DC-DC series provides 1500V DC optical and transformer separation, entirely breaking ground loops and safeguarding both vessel longevity and crew safety.
Can your DC-DC battery chargers properly manage dual-battery setups with modern Euro 6 / intelligent alternators?
Yes. Standard direct-relay splits fail with modern smart alternators because the engine computer frequently reduces alternator voltage down to 12.2V to conserve fuel, starving auxiliary LiFePO4 house batteries. Eltrum's multi-stage buck-boost DC-DC chargers maintain a continuous wide-input regulation window (e.g., 10–36V) and boost fluctuating alternator output to exact charging profiles (14.6V or 29.2V CC/CV), while simultaneously preventing alternator overheating caused by the low internal resistance of lithium cells.
What are your standard delivery terms, packaging methods, and sample validation procedures for German businesses?
We offer FOB Shenzhen or EXW terms, with flexible DDP (Delivered Duty Paid) air freight options via DHL/FedEx for expedited engineering samples. Standard prototype orders starting at 5 units are dispatched in 3–5 business days. Bulk orders are securely packed with reinforced export cartons, internal shock-absorbing EVA foam, and palletized wrapping suitable for sea freight arriving at ports like Hamburg or Bremerhaven. Payments are accepted via international bank wire (T/T), PayPal, or secure trade escrow.
Can we request custom wiring harnesses, connectors, and conformal potting for offshore salt-fog resistance?
Absolutely. Customization is one of our primary core competences. For marine applications, we utilize high-grade silicone or polyurethane compound vacuum potting that meets IP67 or IP68 waterproof ratings, completely sealing components against salt mist, condensation, and mechanical shock up to 10G. We can pre-assemble automotive-rated IP67 waterproof connectors, ring terminals, custom wire lengths, and laser-engraved buyer branding to streamline your assembly line integration.
Request Custom Marine Power Engineering & OEM Quotations
Connect directly with our engineering division to discuss voltage parameters, custom charging profiles, or sample dispatch for laboratory bench testing and sea trials across Germany.