Smart 36V Lithium Battery Charger DC 12V to 43.8V 13A Waterproof
- Input Voltage: 10V – 36V DC
- Output Voltage: 43.8V DC (CC/CV)
- Rated Current: 13A (570W Peak)
- Protection Rating: Fully Potted IP68
Direct Factory Hardware Showcase
High-Efficiency Marine DC-DC Power Conversion Modules
Engineered for high-vibration maritime propulsion, extreme saltwater humidity, and deep-discharge lithium battery banks operating across the Caribbean and Colón maritime trade corridors.
18–90V Wide-Input to 12V 10A Galvanic Isolated DC Converter
- Input Voltage: 18V – 90V Continuous
- Output Voltage: 12V Stabilized
- Galvanic Isolation: 1500V DC Dielectric
- Target: Radar & Marine Comms
24V to 12V 100A Heavy-Duty Commercial Marine Step-Down Buck
- Input Voltage: 18V – 32V DC
- Output Capacity: 12V @ 100A (1200W)
- Efficiency Rating: ≥ 96% Synchronous
- Chassis: Extruded Anodized AL
1500W High-Power Bidirectional Buck-Boost with RS485 Bus
- Input Voltage: 10V – 60V Wide Window
- Output Selection: 12V / 24V / 28V / 48V
- Telemetry: MODBUS RS485 Enabled
- Thermal: Forced Convection Integrated
400W Dual-Bank Marine DC-DC Alternator to LiFePO4 Charger
- Input Range: 10V – 36V Smart Alternator
- Profiles: LiFePO4, Gel, AGM Multi-Stage
- Ignition Sensor: Vibration & D+ Detection
- Sealing: IP67 Marine Submersion
48V to 24V 40A Industrial Marine & Container Crane DC Converter
- Input Range: 36V – 65V DC
- Output Bus: 24V @ 40A (1000W Continuous)
- Overvoltage Clamp: Hardware Fast Transient TVS
- EMI Compliance: EN 61000-6-2 / CISPR 25
12V to 48V 20A Heavy Marine Thruster & Winch Step-Up Boost
- Input Voltage: 9V – 16V Cold-Crank Safe
- Output Voltage: 48V Fixed Rail
- Continuous Load: 20A (960W Sustained)
- Thermal Rating: -40°C to +85°C Full Load
36–75V to 24V 5A Hermetically Sealed Marine Isolated Supply
- Input Voltage: 36V – 75V DC Bus
- Isolation Barrier: Optical & Magnetic Dual Path
- Ripple & Noise: ≤ 50mVp-p Low Noise
- Environmental: Salt-Mist Resistant ASTM B117
Maritime Engineering Whitepaper
The Crucial Role of DC Power Conversion in Colón’s Maritime Hub
The Port of Colón and the surrounding Atlantic terminal complex—encompassing the Manzanillo International Terminal (MIT), Cristóbal Port, and Colón Container Terminal (CCT)—represent one of the most critical multimodal logistics and transshipment bottlenecks in the Western Hemisphere. Ships transiting the Panama Canal operate under grueling conditions: high ambient salinity, tropical humidity exceeding 90%, extreme thermal fluctuations inside machinery spaces, and intense vibrations caused by heavy diesel engines. Under these rigorous operating parameters, auxiliary marine electronics cannot afford unexpected voltage droop, galvanic corrosion, or transient electrical surges.
As commercial vessel operators, tugboat fleets, and offshore supply vessels (OSVs) modernizing their fleets in the Zona Libre de Colón (Colón Free Trade Zone) shift toward high-capacity Lithium Iron Phosphate (LiFePO4) storage banks, the mismatch between conventional alternators, starter batteries, and sensitive navigation systems has emerged as a major operational hurdle. Standard lead-acid alternator outputs produce unregulated voltage sags when winches, bow thrusters, or ballast pumps trigger massive inductive spikes. Shenzhen Eltrum Electronic Co., Ltd. delivers OEM and ODM engineered Marine DC-DC converters specifically designed to mitigate these exact points of maritime failure.
Technical Insight: Galvanic ground-isolation is critical in tropical marine hubs like Colón. Ground-loop currents between disparate chassis metals accelerate galvanic hull corrosion within days. Eltrum isolated DC-DC converters break common ground loops up to 1,500V DC, protecting delicate NMEA 2000 bridge networks and hull zincs simultaneously.
From high-current non-isolated synchronous buck converters delivering clean 12V or 24V power to shipboard instrumentation, to wide-window buck-boost stabilizers holding 13.8V or 28V outputs regardless of battery degradation, our systems solve critical power instability. By eliminating heat buildup via epoxy vacuum impregnation and extruded aerospace-grade aluminum enclosures, Eltrum units guarantee continuous MTBF surpassing 80,000 operational hours in equatorial waters.
Galvanic Protection & Salt-Fog Shielding
Hermetically potted with thermally conductive silicon elastomer compliant with MIL-STD-810G. Impervious to salt-crust accumulation, engine-room condensation, and sulfur gas exposure prevalent in bunkering berths.
High-Efficiency Synchronous Rectification
Utilizes ultra-low RDS(on) MOSFET stages achieving up to 96% conversion efficiency. Low internal thermal dissipation allows fanless, silent passive cooling in enclosed shipboard utility lockers.
Intelligent CC/CV Lithium Regulators
Integrated microcontrollers deliver precision constant-current/constant-voltage curves matched to LiFePO4 chemistries, preventing alternator over-temperature and battery BMS disconnect cycles.
Field-Tested Applications
Deployment Scenarios Across the Atlantic Maritime Gateway
Custom-engineered OEM/ODM power supplies built for the demanding vessels and infrastructure keeping Panama Canal trade moving around the clock.
Canal Tugboats & Pilot Launches
Tug operations at Cristóbal and Gatun Locks endure extreme mechanical shock and vibration. Our isolated 24V-to-12V and 24V-to-24V converters stabilize radar, ECDIS navigation displays, AIS transponders, and searchlights against voltage dips caused by heavy hydraulic assist engines and pneumatic thrusters.
Container Terminal Handling Equipment
At Manzanillo International Terminal and Colón Container Terminal, rubber-tired gantry (RTG) cranes, terminal tractors, and automated AGVs rely on high-voltage 48V–80V traction packs. Eltrum high-current step-down buck regulators reliably power 12V/24V telemetry, RFID container tracking, and terminal radio communications.
Shelter Bay Marina Cruising Catamarans
Located on the Caribbean entrance of the canal, Shelter Bay Marina hosts long-distance yachts preparing for Pacific crossings. Our smart DC-DC lithium battery chargers integrate dual-battery chemistry banks, allowing 12V alternator systems to charge high-capacity 24V or 48V house LiFePO4 packs without burning out the alternator.
500+
Standard Converter Topologies
130+
Maritime Destination Countries
96%
Peak Electrical Efficiency
1500V
Galvanic Dielectric Isolation
Market Evolution & Forecast
Emerging Technology Trends in Caribbean Shipboard Power
Strategic modernization trends shaping marine electrical procurement in Colón Free Zone ship chandlers and Central American shipyards.
Accelerated Transition to 48V Marine DC Buses
Driven by electric propulsion pods, heavy hydraulic crane replacement, and massive lithium battery retrofits, naval architects in Colón are shifting from conventional 12V/24V architectures to 48V DC microgrids. This shift significantly reduces cable copper weight and line loss, driving heavy demand for high-efficiency 48V-to-12V and 48V-to-24V DC buck-boost regulators.
CAN-Bus & RS485 Real-Time Fleet Telemetry
Modern tug and cargo vessel superintendents demand real-time diagnostics on auxiliary power health. Unmonitored black-box converters are being replaced by smart RS485 / NMEA 2000 compatible modules that continuously transmit live voltage, temperature, current draw, and fault status back to the bridge supervisory SCADA system.
Decarbonization Mandates via Green Port Initiatives
Panama Canal environmental incentives (Green Connection Award) push ship owners toward cold-ironing shore power and zero-emission auxiliary battery banks. Marine DC-DC battery chargers that can interface smoothly with rooftop solar arrays, shaft generators, and hybrid battery packs are becoming the gold standard for regional procurement.
Engineering Matrix
Standard Marine DC-DC Topologies Comparison
A technical guide for naval architects, port electrical contractors, and fleet engineers selecting conversion hardware for Colón transits.
| Converter Architecture | Input Voltage Window | Output Bus Selection | Max Current / Power | Isolation Level | Typical Marine Application |
|---|---|---|---|---|---|
| Buck (Step-Down) | 18V – 36V / 30V – 90V | 12V, 13.8V, 24V Fixed | Up to 100A / 1200W | Non-Isolated (Common GND) | Tugboat bridge radio & radar fed from 24V engine starter bank |
| Boost (Step-Up) | 9V – 16V / 18V – 32V | 24V, 28V, 36V, 48V | Up to 50A / 1000W | Non-Isolated (Common GND) | Operating 48V electric windlasses or hydraulic valves from 12V banks |
| Buck-Boost Auto | 8V – 40V / 10V – 60V | 12V, 13.8V, 19V, 24V | Up to 60A / 1500W | Non-Isolated | Stabilizing sensitive sonar equipment against alternator cranking drop |
| Galvanic Isolated | 18V – 36V / 36V – 75V / 18–90V | 5V, 12V, 24V Clean | Up to 20A / 240W | 1500V DC Dielectric Isolation | Telecom, AIS transponders, positive-ground communications, cathodic hull safety |
| Smart B2B Charger | 10V – 36V Smart Alternator | 14.6V, 29.2V, 43.8V, 58.4V | Up to 30A / 800W | Both Iso & Non-Iso Models | Controlled multi-stage LiFePO4 charging from tugboat alternator |
Manufacturing Rigor
Why Colón Maritime Importers Rely on Eltrum
Shenzhen Eltrum Electronic Co., Ltd. combines an ISO 9001 certified modern manufacturing facility with a decade of direct focus on ruggedized power conversion electronics.
ISO 9001 Certified Shenzhen Facility
Operating a production center exceeding 3,000 m² with automated surface mount technology (SMT), reflow soldering ovens, precision magnetic winding machines, and multi-stage automated optical inspection (AOI) ensuring zero dry-joint manufacturing defects.
Full OEM & ODM Customization Capability
From tailoring custom step-up/down ratios and proprietary LiFePO4 CC/CV charging algorithms to embedding customized buyer silkscreen logos, private-label packaging, and marine Anderson/Deutsch heavy-duty harness connections, we build to your exact bid requirements.
100% Full-Load High-Temperature Burn-In
Every single DC-DC unit leaving our production line undergoes a minimum of 4 hours of full-load burn-in under 50°C ambient chamber conditions, followed by high-voltage insulation dielectric testing to eliminate early field mortality across overseas supply chains.
Procurement Insights
Frequently Asked Questions: Marine DC-DC Procurement in Colón
Key technical and logistics inquiries frequently handled by our engineering and export trade teams for Panama and Latin American buyers.
Why is galvanic isolation strongly recommended for commercial vessels operating in Colón and Cristóbal?
In dense maritime areas like Colón, multiple vessels connect to floating docks, steel mooring buoys, and common shore power infrastructures. If non-isolated DC converters are utilized for critical shipboard instrumentation, microscopic ground potential differences between different battery banks or between the hull and sea water create ground loops. These loops trigger severe electrochemical hull pitting and rapid zinc sacrificial anode depletion. Eltrum isolated DC-DC converters feature 1500V dielectric isolation between input ground and output ground, completely severing ground currents and shielding radios from high-frequency alternator switching whine.
Can Eltrum ship orders directly to freight forwarders within the Colón Free Trade Zone (Zona Libre de Colón)?
Yes. We routinely arrange consolidated export shipments from Shenzhen to consignees, designated bonded warehouses, and maritime re-exporters located inside the Colón Free Trade Zone (ZLC), as well as direct airport dispatch via Tocumen International Airport (PTY) or ocean container carriage directly arriving at Manzanillo (MIT) or Cristóbal. Complete international trade documentation—including commercial invoices, packing lists, CE and RoHS certificates of conformity, and Certificates of Origin—is systematically provided for expedited Panama customs clearance.
How do your marine converters withstand tropical high humidity and saltwater spray?
Our marine-series modules feature a solid die-cast or extruded aluminum casing filled under vacuum with optical-grade silicone or epoxy encapsulant (IP68 certified). This complete internal encapsulation protects active semiconductor components, ferrite cores, and copper traces from humidity, salt air crystallization, and aggressive engine compartment oil mist. Furthermore, external hardware including mounting lugs, terminal screws, and heat sink flanges are treated with anti-corrosion passivation or made with marine-grade stainless hardware.
What is the minimum order quantity (MOQ) for custom engineering or standard orders?
To assist shipyards, fleet maintenance superintendents, and maritime electronics distributors in validating engineering performance, standard catalog DC-DC converters and battery chargers can be ordered with a sample MOQ starting from just 5 units. For OEM/ODM design projects—such as proprietary output voltages (e.g., 28V aviation/marine systems, 58.4V LiFePO4 chargers, or customized RS485 communication protocols)—MOQ typically ranges from 50 to 100 units depending on chassis re-tooling requirements.
How does a DC-DC battery charger protect a boat alternator when charging lithium house banks?
Lithium iron phosphate (LiFePO4) batteries feature exceptionally low internal resistance and will draw maximum available current from an alternator indefinitely. Standard marine alternators are not designed for 100% continuous duty at low engine idle and will rapidly overheat, melting their internal diodes and stator windings. An Eltrum DC-to-DC battery charger acts as an active current-limiting gatekeeper: it regulates input current to a safe, steady amp rating, optimizes the charging voltage into a pristine 3-stage CC/CV lithium profile, and prevents battery discharge back into starter circuitry when the engine stops.
What payment terms and lead times apply for commercial orders?
We accept standard international payments including Telegraphic Transfer (T/T), PayPal for sample evaluations, and Escrow in USD or CNY, operating primarily under FOB Shenzhen or EXW terms. Standard catalog models have a factory production turnaround of 7 to 14 business days, while volume OEM orders are fulfilled in approximately 20 to 25 days, with direct air freight options reaching Panama in 4 to 7 transit days.
Need Custom Marine Power Solutions for Colón Fleets?
Connect directly with Shenzhen Eltrum Electronic’s application engineering team. Share your target input voltage, current capacity, isolation requirements, or custom lithium charging profile for an expedited quote.