Smart 36V 13A Waterproof Charger (12V to 43.8V)
- TopologyBoost CC/CV Charging
- Input / OutputDC 12V → DC 43.8V (13A)
- ProtectionIP67 / Over-Voltage / Overtemp
500+
Standard Power Topologies
130+
Global Export Markets
ISO 9001
Audited Factory Standard
96%
Max Conversion Efficiency
Verified Product Portfolio
Featured Industrial DC Power Modules & Lithium Chargers
Field-proven switch-mode architectures engineered for rapid deployment across heavy machinery, automated transit lines, solar storage nodes, and battery electrification in Belgrade.
24V to 12V 85A/100A High-Current Step-Down
- TopologySynchronous Buck
- Input / Output24V → 12V (Up to 100A)
- ApplicationTrucks, GSP Beograd Buses, LEDs
1500W Wide-Window Buck-Boost with RS485
- TopologyNon-Inverting 4-Switch Buck-Boost
- Input / Output10–60V → 12V / 24V / 28V / 48V
- TelemetryModbus RTU via RS485
18–90V Ultra-Wide Input 12V 10A Isolated
- TopologyGalvanic Optocoupler Isolation
- Isolation Rating1500V DC Dielectric Barrier
- ApplicationTelecom Nodes, Electric Forklifts
48V to 24V 40A (1000W) High Efficiency Buck
- EfficiencyUp to 96.5% Synchronous Peak
- Input / Output48V (36–60V) → 24V @ 40A
- HousingDie-cast Aluminum Fin Heat Sink
30–90V to 24V 20A E-Traction Regulator
- TopologyWide-Input Buck Conversion
- Input / Output30–90V (48V/60V/72V) → 24V 20A
- Use CaseWarehouse AGVs & Light Electric Rail
400W Waterproof DC-DC LiFePO4 Charger
- Input Profile10–36V (Euro 6 Smart Alternators)
- Charge Output14.6V / 29.2V Precision Constant-Current
- EnclosureEpoxy Potted IP68 Vibration Proof
12V to 48V 20A (960W) Waterproof Boost
- TopologyMulti-Phase High Current Boost
- Input / Output10–20V → 48V DC @ 20A Continuous
- Efficiency94.8% Full-Load Synchronous Rectification
Technical Engineering Dossier
Engineering Principles of Direct Current Power Conversion
In complex industrial ecosystems such as the Danube-Sava manufacturing corridors, railway intersections, and heavy manufacturing clusters in Belgrade and Central Serbia, switch-mode DC power supply reliability dictates total operational uptime. A robust DC power module must execute precision voltage step-down (buck), step-up (boost), bi-directional stabilization (buck-boost), or total ground loop isolation under violent electromagnetic interference, ambient thermal swings (-40°C to +85°C), and erratic source voltage profiles.
Switch-Mode Topologies: Buck, Boost, Buck-Boost & Transformer Isolation
Modern electronic design demands precise topology selection. Buck converters utilize high-side MOSFET switching combined with synchronous rectification to lower voltages efficiently without burning excess power as heat—indispensable when powering sensitive 12V telematics or 24V PLCs directly from 48V battery systems or 72V traction voltages. Conversely, Boost converters store inductive energy within a powdered-iron magnetic core during conduction cycles, releasing boosted potentials up to 48V or 58.4V to charge auxiliary banks or drive servo mechanisms from low-voltage vehicle batteries.
Where input swings dynamically cross the output threshold—frequently observed in dual-battery off-grid solar banks and vehicle alternators operating between 9V and 16V—a Buck-Boost stabilizer guarantees unbroken regulation. For safety-critical telecommunications and noisy grid-connected automation, Galvanically Isolated DC-DC converters incorporate high-frequency isolation transformers, completely severing common ground loops to prevent parasitic ground currents from destroying delicate microprocessor arrays.
| Circuit Topology | Dynamic Input Window | Efficiency | Ground Reference | Target Industrial Utility |
|---|---|---|---|---|
| Synchronous Buck | Vin must exceed Vout by >2V | 94% – 97% | Common Ground | Industrial automation, rolling stock step-down, 24V to 12V vehicle racks |
| Inductive Boost | Vin strictly lower than Vout | 92% – 95% | Common Ground | High-voltage auxiliary drives, solar array voltage boosting, 48V motor buses |
| 4-Switch Buck-Boost | Wide Swing (e.g., 8V – 40V) | 90% – 94% | Common Ground | Vehicle alternator battery charging, fluctuating solar PV storage, field radio kits |
| Opto-Isolated Flyback/Push-Pull | Standard Telemetry (18–90V) | 86% – 91% | Isolated (1.5kV+ Barrier) | Substation RTUs, positive-ground telecom networks, heavy medical & lab machinery |
Regional Integration Focus
Localized Application Scenarios Across Belgrade & Serbian Infrastructure
How localized engineering contractors, equipment manufacturers, and logistics hubs utilize Eltrum DC power modules in mission-critical applications.
Belgrade Municipal Fleet & Transit Modernization
Electrification initiatives within GSP Beograd (trolleybuses, hybrid-electric transit, and public buses) necessitate ruggedized 24V-to-12V buck converters and 48V auxiliary units capable of absorbing load-dump surges, powering automated ticketing validators, GPS route displays, and onboard communication equipment without downtime.
Telecom Infrastructure & Data Hubs
Telecommunications networks throughout the New Belgrade tech corridor rely on 36V–75V isolated DC-DC converters. These units step nominal -48V telecommunication exchange voltages down to regulated 12V or 24V logic rails for server racks, microwave transmission links, and 5G cellular transceivers, safeguarding sensitive silicone against lightning surges and line harmonics.
Heavy Logistics & Automated Warehousing
In high-throughput distribution hubs in Dobanovci and Surčin, automated guided vehicles (AGVs) and electric warehouse forklifts operating on 48V or 72V traction battery banks deploy our step-down converters to reliably power optical LiDAR systems, motor controllers, RFID readers, and industrial touch interfaces without ground bounce interference.
Vojvodina & Danubian Agri-Tech Systems
Heavy agricultural automation and irrigation infrastructure across Pančevo and northern agricultural belts leverage wide-swing 10–60V buck-boost modules. These ensure constant 24V supply rails for electro-hydraulic proportional valves and autonomous RTK GPS guidance modules, defying generator drops and brownout transients.
Danube River Commercial Vessels & Barges
Freight transit on the Danube and Sava waterways requires robust, waterproof IP65/IP68 power equipment. Our potted DC-DC chargers and buck converters manage dual-battery marine systems, cleanly delivering stable 13.8V or 28V auxiliary power to VHF radios, sonar arrays, and navigation safety transponders despite heavy engine alternator ripples.
Industrial Automation in Rakovica & Batajnica
Manufacturing facilities undergoing Industry 4.0 retrofits utilize DIN-rail mounted isolated DC-DC power modules to decouple high-noise hydraulic machinery from sensitive PLC control panels, preventing false sensor triggers and preserving component MTBF in continuous operations.
Macro Outlook
Strategic Electrification Trends in Serbia's Industrial Sectors
Procurement teams in the Western Balkans are facing rapid changes in regulatory, technical, and battery chemistry demands.
1. Transition from Lead-Acid to Lithium Iron Phosphate (LiFePO4)
Serbian commercial fleets, telecoms, and material handling systems are replacing heavy AGM/lead-acid packs with LiFePO4 chemistry. Traditional alternators cannot supply the strict two-stage Constant Current / Constant Voltage (CC/CV) curve required, driving mandatory implementation of intelligent DC-DC battery chargers.
2. Shift to 48V Distributed Power Architectures
In compliance with EU emissions directives and efficiency protocols, modern facilities are migrating from 12V/24V high-current runs to 48V distribution buses. This reduces copper wire weight, minimizes resistive I²R line losses, and demands high-performance 48V-to-12V and 48V-to-24V point-of-load step-down converters.
3. Remote Bus Telemetry via RS485 & CAN-Bus Protocols
Standalone power bricks are being replaced by digital-control converters. Plant engineers and fleet managers require live visibility over current draw, rail temperatures, and fault flags via RS485 Modbus telemetry, integrating converter diagnostics straight into centralized SCADA frameworks.
Manufacturer Capabilities
Why Belgrade Procurement Teams Partner with Eltrum
Since 2015, Shenzhen Eltrum Electronic Co., Ltd. has operated as an on-site verified manufacturer specializing in switch-mode conversion architectures. With a dedicated 3,000 m² factory and 51–100 skilled technical personnel, we bridge Tier-1 engineering capabilities with accessible low-volume sampling for engineering validation.
- Engineering Validation from 5 Units: Low minimum order quantities allow Serbian design teams to bench-test prototypes before committing to volume manufacturing runs.
- Certified CE & RoHS Compliance: Every converter series conforms to EU electromagnetic compatibility (EMC) standards, crucial for import across Serbian customs into EU-aligned trade projects.
- Complete OEM / ODM Flexibility: Custom tuning of input rails, output voltage trims, current limits, specific IP68 waterproof potting, and customized terminal connectors.
- 100% Full-Load Burn-In Verification: Each module undergoes high-temperature full-load stress testing prior to packaging to ensure zero field-failure rates.
- Export Stability: Regular air/sea export logistics into Belgrade (BEG airport hubs and Balkan freight consolidators) with transparent T/T, PayPal, and Escrow payment terms.
Procurement Reference
Frequently Asked Questions by Belgrade Engineering & Sourcing Teams
Key clarifications regarding delivery, standards compliance, thermal derating, and technical integration for Serbian projects.
What is the standard delivery timeframe for DC power module shipments into Belgrade?
Standard catalog sample evaluation orders (5–20 units) are typically prepared within 3 to 5 business days and dispatched via express air freight (DHL, FedEx, UPS) directly to Belgrade Nikola Tesla Airport customs, taking approximately 5 to 8 transit days. Volume containerized or consolidated air-cargo shipments for ongoing production runs operate on a 2 to 3-week lead time, accompanied by complete EUR-compliant commercial invoices, packed under EXW or FOB Shenzhen terms.
Do Eltrum converters meet European Union CE / EMC standards enforced at Serbian customs?
Yes. All Eltrum DC-DC converters, stabilizers, and waterproof LiFePO4 chargers are designed and manufactured in full accordance with CE Low Voltage Directive (LVD) and Electromagnetic Compatibility (EMC) benchmarks, as well as RoHS hazardous substance restrictions. Full test reports and Declaration of Conformity (DoC) documents can be provided directly to your customs broker or compliance department prior to dispatch.
When should our engineers select an isolated converter over a synchronous buck unit?
A non-isolated synchronous buck converter is recommended when input voltage stays consistently above the target rail and the load shares a common chassis ground, delivering maximum efficiency (up to 96%) and a smaller footprint. You must select an isolated converter when operating in positive-ground telecom frameworks, high-voltage battery banks (such as 72V/80V forklifts) where ground isolation is required for operator safety, or where inductive motor noise could inject harmful ripples into sensitive microcontrollers and telemetry sensors.
How do Eltrum DC power modules perform in high ambient temperatures during Balkan summers?
Our power modules feature high-grade silicone thermal potting and heavy aluminum alloy extrusion casings that serve as integrated heat spreaders. For ambient conditions between -20°C and +50°C, units operate continuously at full nameplate current. If installed inside sealed enclosures or engine bays where ambient temperatures exceed 60°C, we advise derating the continuous load by 20% to 30%, or mounting the unit against an auxiliary chassis heat-sink. Integrated thermal-shutdown circuitry automatically protects the module against over-temperature conditions.
Can your DC-DC battery chargers properly handle Euro 6 smart alternators in commercial vehicles?
Yes. Euro 6 vehicles modulate alternator output voltage erratically based on regenerative braking and ECU fuel-saving maps, often dropping below 12.2V or surging above 15V. Our multi-stage DC-DC battery chargers utilize wide-input buck-boost regulation to harvest power from fluctuating alternator rails and transform it into a rock-stable CC/CV charging profile (e.g. 14.6V for LiFePO4 or 14.4V for AGM) without draining the starter battery.
Can we request custom output voltages, wire harnesses, or custom branding (OEM)?
Absolutely. Shenzhen Eltrum Electronic offers complete buyer-label and custom ODM manufacturing services. We can adjust the internal resistor network to achieve non-standard output voltages (such as 13.8V, 27.6V, 36V, or 58.4V), assemble specific waterproof connectors (such as Deutsch, Anderson, or Amphenol), integrate RS485 communication protocols, and apply custom silkscreen logos and laser-etched serial tags.
Accelerate Your System Design with Verified Power Modules
Partner directly with Shenzhen Eltrum Electronic for dependable DC-DC conversion and lithium battery charging architectures. Sample validation units dispatched within 5 days to Belgrade.
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