Smart 36V Lithium Charger DC 12V to 43.8V 13A
- TopologyDC-DC Boost Step-Up
- Input Voltage10V – 36V DC
- Charge Output43.8V @ 13A (CC/CV)
- ProtectionIP68 Potting / Over-temp
Verified Product Lineup
Engineered Converters & LiFePO4 Chargers Ready for Export
Constructed with IP65/IP68 potted aluminum enclosures, high thermal dissipation matrices, and microsecond-level CC/CV charging curves tailored for high-temperature, salt-laden island infrastructure.
400W DC-DC Dual RV & Marine Charger
- Input Range10V – 36V DC Wide
- Nominal Outputs14.6V / 29.2V / 43.8V
- Efficiency> 94% Synchronous
- HousingExtruded Thermal Aluminum
1500W Buck-Boost Converter (RS485)
- Input Voltage10V – 60V Continuous
- Output Range12V / 24V / 28V / 48V
- Data InterfaceMODBUS RS485 Serial
- TargetOff-grid Marine & Solar
18–90V to 12V 10A Galvanic Module
- Isolation1500V DC Galvanic
- Input Vector18V – 90V DC Broad
- Output Regulation12.0V ± 1.5%
- DeploymentTelecom Base & Maritime
600W Waterproof LiFePO4 Station Charger
- Input Utility90V – 265V AC Universal
- Charge Output14.6V to 58.4V Selectable
- Ingress RatingIP65 Weatherproof
- Safety CertsCE / RoHS / ISO 9001
24V to 12V 100A Industrial Buck Converter
- Input Voltage18V – 35V DC
- Max Continuous12V @ 100A (1200W)
- Thermal ThresholdAuto-derating at 85°C
- Use CaseHeavy Transport & Marine Auxiliary
8–40V to 13.8V 30A Buck-Boost Stabilizer
- Input Spectrum8V – 40V DC (Anti-Cranking)
- Regulated Output13.8V Clean Float Rail
- Rated Amperage30A Sustained Output
- TargetVHF Radio, Navigation, Starlink
12V to 48V 20A Sealed Step-Up Boost
- Nominal Input9V – 16V DC Low Rail
- Boost Rail48.0V @ 20A (960W)
- Efficiency95.5% Synchronous FET
- ApplicationSolar Pump, Golf Cart, Inverters
Strategic Local Market Engineering
Optimizing DC Power Conversion for Dominica’s Critical Infrastructure
The Commonwealth of Dominica presents one of the most demanding environmental and electrical topographies in the Eastern Caribbean. As the country accelerates toward climate-resilient microgrids, eco-tourism mobility, and marine electrification, generic power converters experience accelerated field degradation.
1. Mitigating Severe Voltage Transients in Island Microgrids & Alternator Loops
In Dominica, auxiliary vehicle fleets and residential hybrid systems operate under wide dynamic input swings. From alternator load-dump surges common in off-road utility transports navigating Roseau to Portsmouth through the mountainous interior, to solar arrays experiencing severe cloud shadowing across rainforest valleys, standard buck regulators routinely fail due to unregulated MOSFET breakdown.
Our custom OEM DC-DC battery chargers utilize wide-input buck-boost topologies (8–40V and 10–60V) featuring hardware transient suppression circuits rated for peak clamping well above automotive 87V load-dump standards. By guaranteeing a strict 3-stage CC/CV profile (Constant Current, Constant Voltage, and Float), these units prevent premature BMS cut-off in LiFePO4 house packs and stop over-temperature runaway caused by excessive alternator ripple current.
Commercial Marine & Fishing Fleets
Operating out of Portsmouth and Roseau harbors, Dominican commercial skiffs and eco-charter catamarans demand IP68 potted battery-to-battery chargers. By isolating engine starter batteries from auxiliary LiFePO4 trolling and navigation banks, our chargers ensure high starting reliability while preventing galvanic corrosion along shared hull grounding.
Off-Grid Eco-Resort Microgrids
From Morne Trois Pitons to coastal rainforest eco-lodges, off-grid hospitality sites operate 48V battery banks alongside distributed 12V and 24V LED, refrigeration, and communication circuits. Our high-power buck converters deliver up to 100A continuous output without audible switching hum or thermal derating at ambient 40°C.
Telecom Emergency Backbone
Following catastrophic storms, telecommunications repeater stations situated along elevated volcanic ridges must remain powered. Our galvanic isolated converters (1500V DC isolation) safeguard sensitive base station repeaters and satellite transceivers from lighting induction and high common-mode ground transients.
Market Evolution
Emerging Trends Transforming Dominica's Power Architecture
Hardware procurement is shifting from standalone unmanaged modules to intelligent, telemetry-enabled power blocks engineered for renewable integration.
Widespread Transition to LiFePO4 Chemistry
Heavy lead-acid battery banks suffer rapid sulfation in humid tropical climates. Fleet operators and solar integrators across the Caribbean are replacing AGM/Gel with LiFePO4 cells. This requires precise DC-DC charging curves with exact absorption (14.6V / 29.2V) and 0V cold-start battery wake-up triggers that bypass locked BMS circuits.
Digital Telemetry & MODBUS Control
Modern microgrid deployments require remote oversight. Our newer series integrate RS485 / CAN communication interfaces, allowing central energy management systems (EMS) to monitor real-time temperature, charging amperage, output voltage, and fault codes remotely over LoRaWAN or 4G telemetry modules.
Hermetic Environmental Sealing (IP68)
Salt spray and relative humidity exceeding 85% degrade open-frame PCB assemblies within months. The Dominica market is prioritizing fully potted, vacuum-sealed silicone compound power supplies that achieve true corrosion-proof, dust-tight, and moisture-impervious operation under sustained engine-bay heat.
Shenzhen Eltrum Electronic Co., Ltd.
Direct OEM Manufacturing Prowess Since 2015
With over 500 standard conversion and charging models, Shenzhen Eltrum Electronic operates an onsite-verified production facility equipped with high-speed SMT lines, automatic transformer winding machines, vacuum compound potting chambers, and computerized burn-in aging racks.
Our engineering department specializes in low-MOQ rapid sampling (from 5 units), custom enclosure extrusions, custom charging curve algorithm development, and comprehensive buyer-label branding for importers and engineering contractors serving Dominica and the Caribbean Basin.
ISO 9001 Certified
CE & RoHS Compliance
100% Full-Load Burn-In
Direct Engineering Support
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500+
Standard Power Conversion Models
130+
Countries and Regions Supplied
3,000m²
Total Production & QC Capacity
5 Pcs
Low Minimum Order for Custom Prototypes
Procurement Clarity
Frequently Asked Questions by Caribbean Buyers
Direct technical and commercial answers for electrical engineers, system integrators, and volume distributors sourcing power electronics for Dominica.
Why is a DC-DC charger preferred over an automatic charging relay (ACR) for boats and RVs in Dominica?
Automatic Charging Relays simply bridge two battery banks in parallel when alternator voltage rises. When modern LiFePO4 batteries are paired with standard vehicle or marine alternators, the extremely low internal resistance of lithium draws excessive amperage, frequently overheating the alternator stator winding or tripping its thermal regulator. A dedicated DC-DC charger limits draw to a precise, safe amperage (e.g., 13A, 25A, 40A), delivers a tailored multi-stage CC/CV profile to 100% capacity, and protects both battery banks from cross-draining when the engine is off.
How do your IP68 potted chargers withstand salt mist and high humidity in coastal zones like Portsmouth?
Our waterproof modules undergo a complete vacuum-potting encapsulation with thermally conductive, flame-retardant epoxy or silicone resin. This process completely hermetically seals internal active components, inductors, and MOSFETs away from oxygen, saline vapor, condensation, and tropical insects. The solid exterior also delivers military-grade vibration resistance, crucial for off-road terrain and pounding sea states.
Can you customize the charging algorithm for proprietary lithium chemistries or specific BMS cut-offs?
Yes. As the original design manufacturer (ODM), we can program the internal microcontroller to match any targeted battery profile, including LiFePO4 (typically 14.6V absorption, 13.6V float for 12V packs), ternary Lithium-ion (NMC 12.6V / 16.8V / 25.2V), or custom lead-crystal and AGM specs. We also offer programmable models featuring RS485 communication for dynamic real-time adjustment via host controllers.
What are the logistics, FOB ports, and lead times for shipping consolidated freight to Dominica?
We export primarily via FOB Shenzhen or EXW terms. For shipments destined for Dominica, we routinely coordinate with freight forwarders operating consolidation hubs in Shenzhen, Guangzhou, or Miami, FL, dispatching via sea freight (FCL/LCL) to Woodbridge Bay Port in Roseau, or air cargo for rapid component samples. Standard model sample orders ship within 3–7 business days, while volume OEM production batches typically conclude within 15–25 business days.
What payment currencies and trade protection options are available for new importers?
We support transactions in USD, EUR, and CNY via Wire Transfer (T/T), PayPal for sample evaluations, and secure trade escrow services. Initial sample runs start with a minimum order quantity (MOQ) of just 5 units, allowing procurement teams and field engineers to validate performance on Dominican electrical grids before committing to full batch volume.
Ready to Engineer Your Custom DC Power Solution?
Consult directly with our Shenzhen power supply engineering specialists. Get custom voltage configuration, technical datasheets, and factory-direct pricing for the Dominican market within 24 hours.