Smart 36V 13A DC-DC LiFePO4 RV Charger
- Input Bus: DC 12V (9–18V)
- Charging Out: DC 43.8V @ 13A
- Protection: IP67 Potted / CE
Enterprise Product Line
Flagship RV & Off-Grid Power Charging Modules
Engineered by Shenzhen Eltrum Electronic Co., Ltd. for extreme voltage resilience, galvanic isolation, thermal durability up to 65°C, and full lithium-iron-phosphate (LiFePO4) profile compatibility.
1000W IP65 Industrial AC-DC Lithium Charger
- AC Input: 90–265V Wide Range
- Nominal Vout: 14.6V / 29.2V / 58.4V
- Enclosure: Sealed Die-Cast Alloy
400W Dual-System DC-DC Alternator Charger
- Input Range: 10–36V DC Variable
- Battery Profiles: 14.6V / 29.2V CC/CV
- Efficiency: ≥94% Synchronous
1500W Dynamic Buck-Boost Voltage Stabilizer
- Input Flex: 10–60V DC Ultra-Wide
- Regulated Out: 12V / 24V / 28V / 48V
- Telemetrics: RS485 Modbus Built-in
300W Waterproof Marine & RV Pack Charger
- Universal AC: 110V/220V 50/60Hz
- Chemistry: LiFePO4 / Ternary Li
- Thermal Range: -30°C to +65°C
18–90V to 12V Isolated Anti-Noise Charger
- Isolation: Optocoupler + Magnetics
- Output Rail: 12V @ 10A Steady
- Ground Protection: Eliminates Ground Loops
24V to 12V 100A High-Capacity Step-Down
- Max Current: 100 Amperes Peak
- Application: Commercial Coach / RV
- Heat Dissipation: Finned Extrusion Case
600W Universal AC-DC Programmable Charger
- Input Tolerance: 85V–265V Anti-Sag
- Charging Profiles: 3-Stage CC/CV Automatic
- Certification: ISO 9001, CE, RoHS
Strategic Engineering Whitepaper
The Cuban Energy Landscape & Mobile Power Decentralization
As Cuba accelerates the modernization of its recreational vehicle fleets, tourist excursion transports, and distributed off-grid microgrids, the country confronts unprecedented environmental and infrastructural hurdles. The national electrical grid (SEN - Sistema Eléctrico Nacional) suffers from frequent brownouts, sharp voltage dips below 95VAC, sudden high-voltage spikes, and severe rolling blackouts. In coastal regions such as Varadero, Cayo Coco, Guardalavaca, and along the Malecón in Havana, relative atmospheric humidity regularly exceeds 85%, carrying corrosive airborne salt ions deep into chassis compartments and engine bays.
In this stringent operating context, generic or non-sealed commercial battery chargers experience high failure rates. Internal condensation triggers electrolytic corrosion, solder whiskering, and short-circuits. Furthermore, typical AC-DC chargers lack broad input-voltage windows, leading to severe thermal runaway or total shutdown whenever Cuban municipal lines fluctuate between 90V and 130V. As a pioneering original equipment manufacturer based in Shenzhen, China, Shenzhen Eltrum Electronic Co., Ltd. produces marine-grade, fully encapsulated, high-efficiency DC-DC and AC-DC battery chargers specifically engineered to conquer these exact Caribbean operational conditions.
500+
Standard Power Models
130+
Export Destinations
IP67
Potting Ingress Protection
5 Pcs
Low OEM Validation MOQ
On-Site Operational Deployments
Localized RV & Mobile Power Use Cases in Cuba
Decentralized energy resiliency is not a luxury in Cuba; it is an absolute necessity for commercial transport operators, eco-tourism resorts, overland expeditions, and off-grid living installations.
State & Private Eco-Tourism Campers
Overland RV campers traveling between Viñales, Trinidad, and Baracoa rely on Eltrum DC-DC chargers to tap alternator power while driving, charging 12V and 24V LiFePO4 house banks without putting strain on the vehicle's primary alternator.
Hybrid Solar-Vehicle Microgrids
Because fuel availability can be intermittent across Cuban provinces, mobile setups combine rooftop photovoltaic solar arrays with Eltrum wide-input buck-boost converters (8–40V and 10–60V) to stabilize fluctuating solar outputs for onboard 12V/24V refrigeration and communications.
Vintage Fleet Retrofits & Conversions
Cuban automotive engineers frequently retrofit classic vehicles and commercial tour vans with modern lithium battery banks. Eltrum isolated DC-DC converters bridge vintage 6V/12V dynamos with delicate 12V/24V GPS, LED signaling, and emergency electronics without ground loop interference.
Severe Shore-Power Brownout Protection
When RVs dock at Cuban marinas or campsites, shore power often fluctuates between 85V and 265V AC. Eltrum AC-DC battery chargers utilize ultra-wide voltage compensation with built-in PFC (>0.98), preventing circuit breaker trips and ensuring uninterrupted charging.
Marine & Coastal Expedition Craft
Deployments in open catamarans and coastal support RVs near the Jardines del Rey archipelago demand IP67 immersion resistance. Sealed polyurethane resin encapsulation protects all active semiconductors against corrosive tropical ocean salt spray.
Mobile Medical & Humanitarian Clinics
Mobile clinics operating in rural Cuban communities mandate fail-safe battery back-up systems. Eltrum chargers maintain critical 24V and 48V cold-chain medical vaccine refrigerators during grid power outages with seamless multi-stage charging algorithms.
Emerging Market Trajectory
Market Dynamics: The Electrification of Cuban Tourism & Transport
Cuba's strategic energy policy has placed immense focus on renewable integration, energy storage systems (BESS), and electrification of urban and tourism mobility. As diesel and gasoline distribution experiences periodic regional bottlenecks, tourism agencies (such as Transtur and Cubanacán) and private small-to-medium enterprises (MIPYMEs) are accelerating investments into high-cycle LiFePO4 batteries to substitute noisy, inefficient fossil-fuel generators.
Key trends driving power electronics procurement from China to Cuba include:
- Rapid Transition from Lead-Acid to LiFePO4: Legacy deep-cycle AGM batteries degrade rapidly in Cuba's 35°C–40°C ambient summer temperatures. LiFePO4 cells are replacing them across recreational vehicles, requiring dedicated 3-stage CC/CV charging curves (14.6V for 4S, 29.2V for 8S, 58.4V for 16S packs) with automatic zero-volt wake-up functions.
- Dual-Source Energy Harvesting: Modern Cuban camper conversions are rarely single-source. Installations increasingly pair rooftop 400W solar modules with intelligent alternator-driven DC-DC converters to maintain battery equilibrium regardless of sunshine or travel schedules.
- Direct B2B Procurement via Cuban MIPYMEs: Recent trade policy adjustments enable Cuban private entities and registered import-export agencies (such as CIMEX, BK-Import, and Maquimport) to import energy conversion equipment directly from verified Chinese manufacturers, cutting out costly third-party European distributors.
Rigorous Engineering Benchmarks
Technical Comparison: Eltrum Chargers vs. Conventional Imports
Selecting power conversion hardware for Cuba requires deep consideration of thermal dissipation, voltage surge limits, and hermetic sealing. Here is how Shenzhen Eltrum Electronic Co., Ltd. compares against typical aftermarket chargers:
| Evaluation Parameter | Shenzhen Eltrum Systems | Generic Commercial Converters | Impact on Cuban Operations |
|---|---|---|---|
| AC Input Resilience | 85V – 265V AC Universal (Active PFC) | 110V or 220V Fixed (±10%) | Eltrum survives extreme grid brownouts and surges in provincial Cuba without burning out. |
| Ingress Protection | IP65 / IP67 Fully Potted Polyurethane | Vented Fan Enclosures (IP20) | Prevents salt corrosion, mold, insect intrusion, and humidity failure in coastal marinas. |
| Thermal Derating | Operational up to +65°C Ambient | Derates drastically above +40°C | Maintains stable charging current inside unventilated Cuban RV chassis & engine compartments. |
| BMS LiFePO4 Wake-Up | Integrated Low-Voltage Pulse Wake-Up | Requires Manual External Excitation | Automatically revives LiFePO4 battery banks tripped by deep discharge during power shortages. |
| Galvanic Isolation | 1500VDC Input-to-Output Isolation | Non-Isolated Shared Ground | Eliminates ground loops, suppresses alternator noise, and shields delicate navigation equipment. |
World-Class Manufacturing
Enterprise Capabilities: Shenzhen Eltrum Electronic Co., Ltd.
Founded in 2015 and headquartered in Shenzhen's high-tech manufacturing corridor, Shenzhen Eltrum Electronic Co., Ltd. operates a facility covering 3,000 square meters, supported by a specialized team of over 50 skilled engineers and assembly technicians. We specialize in isolated DC-DC converters, buck-boost stabilizers, waterproof AC-DC LiFePO4 chargers, and high-density power modules serving demanding industrial, transportation, and alternative energy sectors.
ISO 9001 Certified Quality
Every charging unit undergoes multi-stage automated optical inspection (AOI), high-temperature 100% full-load burn-in testing, and dielectric voltage-withstand testing prior to container dispatch.
Flexible OEM / ODM Customization
We modify input/output ranges, tailor custom lithium-ion and LiFePO4 charging profiles, integrate RS485/CAN-bus communication protocols, and provide private buyer branding from minimal quantities.
Low MOQ for Market Validation
To support Cuban engineering firms and import agencies testing small-batch trials, standard product lines feature an approachable MOQ starting from just 5 units.
Our legal standing has been verified on-site by international third-party certification authorities. Exporting to over 130 countries worldwide, Eltrum is a trusted tier-1 supply partner across North America, South America, Europe, Southeast Asia, and the Caribbean Basin.
Procurement Clarity
Frequently Asked Questions for Cuban Importers
Direct technical and commercial answers addressing common logistical, operational, and regulatory inquiries when sourcing battery chargers from China.
How do Eltrum chargers cope with Cuba's erratic 110V/220V grid voltages?
Our AC-DC chargers incorporate an ultra-wide voltage architecture capable of accepting any fluctuating input from 85V up to 265V AC at 50Hz or 60Hz. If a campground in Cienfuegos or a dock in Varadero suffers a voltage drop to 95V, the charger maintains steady CC/CV output without overheating or shutting down, protecting your LiFePO4 bank.
Can these chargers withstand the salty, humid Caribbean marine environment?
Yes. Our marine and RV charger lines are built with IP65 and IP67 ratings. Internal electronics are encapsulated in thermal-conductive polyurethane or silicone resins within an anti-corrosive extruded aluminum alloy housing. This completely shields internal components from salt aerosol, high tropical humidity, insects, and fine dust.
What is the minimum order quantity (MOQ) for shipping to Havana or Mariel?
For standard converter and charger configurations, our MOQ starts at just 5 units. This allows Cuban private enterprises (MIPYMEs), engineering contractors, and fleet operators to validate our hardware in real-world Caribbean road tests before committing to full 20ft or 40ft maritime container quantities.
Can an Eltrum DC-DC charger charge a lithium house battery from an older vehicle alternator?
Yes. Connecting a LiFePO4 battery directly to a standard lead-acid vehicle alternator can overheat and burn out the alternator due to lithium's extremely low internal resistance. An Eltrum battery-to-battery (DC-DC) charger limits current draw, steps up or down the voltage accurately, and enforces an exact 14.6V or 29.2V charging curve while isolating the starter battery.
What international certifications accompany Eltrum power products?
Our chargers and converters are manufactured under an ISO 9001 quality management framework and are fully compliant with European CE (LVD & EMC directives) and RoHS standards. Certification dossiers and lab test reports are available upon request for Cuban customs clearance and technical audit verification.
What payment terms and logistics trade terms (Incoterms) are supported?
We support standard international B2B payment methods including Wire Transfer (T/T), PayPal for sample batches, and Escrow in both USD and CNY (Chinese Yuan). We provide FOB Shenzhen/Guangzhou, CIF Port of Mariel / Port of Havana, and EXW terms, working with your designated forwarder or our network of international logistics carriers.
Connect Directly with Eltrum Power Engineers
Seeking custom charging curves, RS485 communication setups, or bulk container pricing for Cuban RV conversions and solar microgrids? Our Shenzhen technical support team is standing by to deliver immediate schematics, validation samples, and comprehensive quotes.