Smart 36V Lithium Battery Charger DC 12V to 43.8V 13A
- Input / Output12V DC → 43.8V DC
- Max Current13A Continuous
- Ingress RatingIP67 Fully Potted
- Target LoadsEVs, E-Bikes, Marine
Engineered Deployments
Featured DC-DC Converters & High-Current Chargers
Precision-manufactured power conversion units featuring IP65–IP68 environmental seals, wide input voltage tolerance (8V–90V), and multi-stage intelligent lithium charging curves proven for challenging operating conditions.
400W DC-DC Dual Battery Charger 10-36V
- Input Window10V–36V Wide DC
- Supported Profiles14.6V / 29.2V / 43.8V
- Thermal MgmtIntegrated Heat-Sink
- ProtectionAlternator Isolator
1500W Dynamic Buck-Boost RS485 Telemetry
- Wide Voltage In10V–60V DC Regulated
- Output Bus12V / 24V / 28V / 48V
- MonitoringRS485 Serial Protocol
- TopologySynchronous Switching
120W Galvanic Isolated 18-75V to 24V 5A Module
- Input Spectrum18–36V / 36–75V
- Rated Output24V DC @ 5A Flat
- Ground Isolation>1500V DC Dielectric
- Core TargetTelecom Repeater Sites
24V to 12V 85A/100A Heavy Vehicle Buck Regulator
- Source System24V Fleet Alternators
- Output CurrentUp to 100A Constant
- Protection SuiteOver-Current / OVP / OTP
- ApplicationMining, Logistics, Marine
Waterproof 12V to 48V Step-Up Boost Module (20A)
- Input Rail12V Nominal Starter/Aux
- Boost Rail48V High-Voltage Bus
- EfficiencyUp to 96% Conversion
- DeploymentSubmersible Pumps & Solar
30-90V High-Input Traction Buck (72V to 24V 20A)
- Ultra-Wide In30V–90V (48/60/72V Packs)
- Auxiliary Rail24V Stable Low Voltage
- Thermal SinkRibbed Aluminum Chassis
- Use CaseElectric Light Vehicles / AGV
8-40V to 13.8V 30A Wide-Spectrum Marine Stabilizer
- Operating In8V–40V Continuous
- Fixed Out13.8V (Float-Charge Level)
- Capacity414W Sustained Peak
- ResilienceAnti-Salt-Fog Sealing
Operating Environment Deep Dive
Engineering Resilient DC Power Infrastructure for Timor-Leste
Deploying off-grid power electronic architectures in the Democratic Republic of Timor-Leste requires overcoming specific geographical, electrical, and environmental constraints unmatched in temperate regions.
High Humidity & Marine Salt-Mist Resistance
The coastal strip encompassing the Port of Dili, Tibar Bay, and Atauro Island experiences relentless ambient relative humidity exceeding 85% paired with airborne sodium chloride aerosol. Conventional open-frame power supplies suffer catastrophic galvanic dendritic growth and premature semiconductor failure.
- Full poly-resin epoxy void-free vacuum potting (IP67/IP68).
- Passivated anodized aluminum enclosures resisting salt-spray pitting.
- Gold-plated or nickel-plated contact interfaces preventing tin whisker formation.
Extreme Rural Grid Sag & Generator Transients
Outside central Dili, electricity distribution across districts like Ermera, Bobonaro, and Oecusse relies heavily on decentralized diesel gen-sets and tenuous rural grid branches. Voltage transients, sudden load-shedding drops, and severe alternator voltage sags are commonplace during inductive equipment startups.
- Ultra-wide input topologies (e.g., 8V–40V or 18V–90V dynamic range).
- Integrated multi-stage MOV and TVS transient surge clamping circuits.
- Uninterrupted CC/CV LiFePO4 battery charging through severe line drops.
High Solar Irradiance Thermal Derating
Timor-Leste's proximity to the equator produces solar irradiation levels averaging 5.5 to 6.2 kWh/m²/day. Sealed equipment enclosures exposed to direct sunlight often experience internal ambient temperatures rising well above 55°C, demanding engineered thermal conductivity rather than noisy, failure-prone cooling fans.
- Full load continuous operation up to 60°C without catastrophic shutdown.
- Optimized planar magnetic transformers reducing iron-core losses.
- Intelligent thermal foldback safeguarding internal power MOSFETs.
Local Deployment Sectors
Mission-Critical Use Cases Across Dili & Outer Districts
From maritime logistics and public telecommunications to off-grid solar mini-grids, our DC-DC chargers and converters act as the foundational power backbone.
Coastal Fishing Fleets & Tibar Port Marine
Traditional motorized outrigger boats, coastal surveillance vessels, and harbor workboats navigating the Ombai and Wetar Straits require dependable auxiliary battery isolation. Our waterproof DC-DC chargers seamlessly isolate starter batteries while rapidly charging dedicated navigation, GPS, and communication banks using unregulated engine alternators without risk of overcharging.
Remote Telecom Repeaters & Tower Stations
Mountainous ridge-top microwave links connecting remote villages operate on 48V DC battery banks charged by hybrid solar-diesel systems. Our isolated DC-DC converters deliver stable 12V and 24V step-down power to sensitive routers, remote terminal units (RTUs), and security telemetry, preventing destructive ground-loop circulating currents and lightning surges.
Rural Solar Home Systems & Agricultural Cold-Chain
International development initiatives and local microgrid contractors deploy decentralized solar setups across agrarian municipalities such as Baucau and Maliana. Our buck-boost regulators maintain absolute 12V or 24V DC bus voltage for medical vaccine refrigerators and agricultural cold storage, eliminating compressor cutouts caused by solar battery voltage sag.
Selection Architecture
Technical Topology Selection Matrix for Local Contractors
Match your power delivery requirements to the optimal DC-DC conversion topology to avoid system burnout and maintain peak electrical efficiency.
| Conversion Category | Input Envelope | Output Voltage Profiles | Peak Efficiency | Primary Application in Timor-Leste |
|---|---|---|---|---|
| Buck (Step-Down) | 24V, 36V, 48V, 72V Nominal | 12V, 13.8V, 24V Stabilized | 94% – 96.5% | Heavy logistics trucks, 48V telecom step-down, agricultural tractors |
| Buck-Boost (Wide Range) | 8V–40V, 10V–60V Dynamic | 12V, 19V, 24V, 48V Fixed | 92% – 95% | Marine dual battery systems, solar battery buffers, engine cranking rails |
| Isolated Galvanic | 18V–36V, 36V–75V, 18V–90V | 5V, 12V, 24V Isolated | 88% – 92% | Industrial automation, radar/sonar equipment, positive-ground telecom nodes |
| Smart Multi-Stage Charger | 10V–36V, 18V–90V DC In | 14.6V (4S), 29.2V (8S), 43.8V, 58.4V | 93% – 96% | Off-grid LiFePO4 storage packs, e-mobility charging, commercial fishing boats |
500+
Standard Power Models
130+
Export Destinations
ISO9001
Quality Certified Facility
5pcs
Low Evaluation MOQ
Enterprise Reliability
Direct-from-Manufacturer Advantages for Timor-Leste Projects
Shenzhen Eltrum Electronic Co., Ltd. brings over a decade of precision power supply manufacturing directly to sovereign infrastructure projects, distributors, and engineering contractors.
Proven Engineering Heritage Since 2015
With an established 3,000 m² manufacturing plant and 51–100 specialized electronic production personnel in Shenzhen, Eltrum combines automated SMT lines with rigorous thermal burn-in stress screening. We control the entire design, magnetic winding, encapsulation, and qualification cycle under an audited ISO 9001 framework.
Comprehensive International Certification
Procuring power supplies for institutional infrastructure tenders in Southeast Asia demands full compliance validation. All Eltrum DC-DC chargers and converters comply rigorously with CE, RoHS, and international EMC emission standards, protecting nearby HF radios, satellite terminals, and medical instruments from high-frequency switching noise.
Flexible OEM/ODM Customization & Low Sample MOQ
We respect that off-grid configurations in Timor-Leste frequently call for customized charge cut-offs, non-standard mechanical enclosures, or specialized waterproof aviation couplers. We offer buyer-labeling, customized CC/CV curves for specialized cell chemistries, and rapid prototyping with minimum sample quantities starting from just 5 units.
Procurement Clarity
Frequently Asked Questions for Timor-Leste Importers & Contractors
Clear, direct answers regarding logistics, thermal suitability, customs clearance, and system integration for local buyers.
How do Eltrum DC-DC chargers handle extreme coastal corrosion in Dili and Atauro Island?
Our marine and industrial product lines feature completely vacuum-potted housings using thermal polyurethane epoxy resins rated to IP67/IP68. This eliminates any air pocket where salt-laden humidity could condense. Additionally, external mounting hardware utilizes corrosion-resistant stainless alloy fittings and anti-oxidation aluminum extrusions.
Can your DC-DC battery chargers recharge LiFePO4 batteries directly from standard vehicle alternators?
Yes. Connecting a modern lithium iron phosphate (LiFePO4) battery directly to a vehicle's standard alternator often causes alternator overheating at low RPMs and fails to reach full charge due to fixed alternator regulation voltages. Eltrum DC-DC chargers regulate variable 12V or 24V alternator output into a dedicated 3-stage CC/CV profile (such as 14.6V for 12V packs or 29.2V for 24V packs) while protecting both battery banks from cross-draining.
What are the sea and air freight shipping options to Dili Port or Presidente Nicolau Lobato Airport?
We ship under Incoterms including FOB Shenzhen, CIF Dili, or EXW. Urgent evaluation samples and batch orders under 100 kg are dispatched via direct air express (DHL/FedEx/UPS) reaching Dili in approximately 4–7 business days. Containerized or LCL sea freight orders are routed directly via regular regional lines through Singapore or Surabaya into the Port of Tibar Bay.
What minimum order quantities (MOQ) apply for commercial and custom OEM production?
Standard catalog converters and chargers feature an engineer-friendly MOQ of just 5 units, allowing contractors and project managers to validate performance on-site. High-power units (over 1000W) can frequently be ordered in 1–2 unit quantities. Full OEM custom branding, proprietary voltage settings, and customized wire looms generally require batch runs starting at 50 to 100 units.
When is an isolated DC-DC converter required over a non-isolated buck or boost model?
An isolated DC-DC converter is vital when your installation involves separate grounding systems (common in telecom sites and positive-ground marine setups), high common-mode electrical noise, or where catastrophic high-voltage leakage from a 48V–72V traction pack would destroy sensitive 12V navigation or monitoring electronics. Non-isolated buck models share a common negative ground and provide higher electrical efficiency when galvanic separation is unnecessary.
What international certifications accompany Eltrum products for import compliance?
Our full manufacturing process complies with ISO 9001 quality management procedures. Individual charger and converter families hold valid European CE (LVD/EMC) and RoHS compliance certificates. Test reports, certificates of conformity, and technical datasheets are provided directly with shipments to ensure rapid clearance through Timor-Leste Customs (Autoridade Tributária).
Plan Your Power Architecture with Eltrum Technical Specialists
Whether you are outfitting a municipal solar micro-grid, upgrading marine vessel charging systems, or procuring high-volume DC converters for commercial fleets in Timor-Leste, our engineering team is ready to assist with sizing, datasheets, and sample evaluation.