Smart 36V Lithium Battery Charger DC 12V to 43.8V 13A
- Input Voltage9–16V DC
- Output CC/CV43.8V · 13A
- ProtectionIP67 Waterproof
- TargetEVs, Marine & E-Bikes
Engineering Showcase
Industrial-Grade Power Conversion Systems
Precision-engineered buck, boost, buck-boost stabilizers and LiFePO4 battery chargers optimized for Nordic transport, maritime electrification, and harsh climatic conditions.
1500W High-Power Buck-Boost DC Stabilizer (RS485)
- Input Range10–60V DC
- Output Range12V / 24V / 48V
- Control BusMODBUS / RS485
- ApplicationSub-Zero Automotive & Solar
Wide-Input 18–90V to 12V 10A Isolated DC-DC Module
- Isolation1500V DC Galvanic
- Input Span18–90V Wideband
- Output12V @ 10A Cont.
- ApplicationTelecom & Industrial AGVs
Heavy-Duty 24V to 12V 100A Synchronous Buck Converter
- EfficiencyUp to 96% Peak
- Input / Output24V → 12V (1200W)
- Ingress RatingIP68 Fully Potted
- TargetCommercial Fleet Haulage
600W Waterproof AC-DC LiFePO4 Marine Charger
- Mains Input90–265V AC Universal
- Chemistry Curve14.6V / 29.2V / 58.4V
- CasingCorrosion-Resistant Cast Al
- UseFjord Vessels & Shore Power
12V to 48V Step-Up Boost Converter (20A / 960W)
- Input Bus11–16V DC
- Output Rail48V Regulated ±1%
- Thermal MgmtIntegrated Heat Sink Fins
- TargetHydraulics & 48V Inverters
400W Multi-Stage B2B Alternator-to-Lithium Charger
- Source Range10–36V Alternator/Pack
- Charging LogicCC / CV / Float Smart 3-Stage
- ProtectionEuro 6 Smart Alternator Safe
- TargetUtility Vans & Expedition RVs
Multi-Voltage 36V/48V/72V to 12V Buck Regulator
- Input Margin18–90V Continuous
- Low Standby< 15mA Quiescent Current
- TransientOver-Voltage & Clamping Clamp
- TargetIntralogistics Forklifts & Port Carts
500+
Standard Power Platforms
130+
Global Export Markets
96%
Peak Conversion Efficiency
≥ IP68
Submersible Environmental Ingress
The Strategic Role of Drammen in Northern European Electrification
Drammen occupies a pivotal node within the Nordic commercial distribution network. Serving as the primary automotive gateway into Norway through Drammen Havn (Port of Drammen), the region handles tens of thousands of incoming battery electric vehicles (BEVs), commercial trucks, marine assets, and high-tech manufacturing payloads annually. Driven by the Norwegian Green Shipping Programme (Grønt Skipsfartsprogram) and stringent national mandates mandating net-zero regional haulage, local original equipment manufacturers (OEMs), engineering upfitters, and fleet operators face unprecedented pressure to implement high-reliability power electronics capable of thriving in extreme sub-arctic temperature fluctuations.
In this challenging geographic landscape, low-quality voltage converters encounter severe field failure rates. Cold cracking of soldering joints at temperatures approaching -30°C, dielectric insulation degradation caused by high humidity and marine salt-fog from the Drammensfjord, and high ripple noise interfering with sensitive CAN-bus telematics represent persistent challenges for regional engineers. Eltrum has bridged this technology gap by supplying custom-tailored power conversion modules and waterproof battery charging platforms engineered precisely around European safety and reliability directives.
Engineering Imperative: In sub-zero Nordic operating profiles, voltage converters must maintain continuous synchronization without experiencing startup latch-up or excessive ripple under sudden high-inrush inductive loading. Complete potting using thermoconductive polyurethane resins ensures zero condensation penetration and sustained thermal dissipation across demanding operating bands.
Whether bridging 24V commercial logistics chassis to modern 12V cabin communication equipment, stepping down 72V/96V traction packs on port logistics terminal tractors, or providing isolated power to onboard marine telemetry, Eltrum supplies industrial-grade topologies certified under ISO 9001 frameworks, carrying complete CE and RoHS compliance dossiers.
Field Integration
Localized Deployment Scenarios in Greater Drammen & Viken
How Eltrum power conversion modules resolve mission-critical voltage stabilization challenges across regional infrastructure.
Automotive Import Hub Upfitting
At Drammen Havn's logistics corridors, transport carriers and light commercial conversions demand robust 24V-to-12V buck regulators (up to 100A continuous). These systems operate auxiliary safety cameras, tracking modems, and refrigeration monitoring without parasitic battery drain during prolonged deep-freeze storage.
Fjord Maritime & Electric Vessels
Drammenselva and inner Oslofjord watercraft increasingly deploy hybrid and pure electric powertrains. Our IP68-rated DC-to-DC isolated converters provide up to 1500V galvanic separation between high-voltage propulsion lithium banks and sensitive 12V/24V navigation radar, SONAR, and NMEA 2000 marine electronics.
Cold-Climate Off-Grid Energy Systems
Cabins (hytter) and remote sensing installations throughout Buskerud rely on wide-input buck-boost converters (8-40V and 10-60V). When solar irradiance is minimal during Nordic winters and battery bank voltage sags under heavy resistive heating loads, our stabilizers maintain tightly regulated 12.0V or 24.0V outputs.
Port Automation & Intralogistics
Autonomous guided vehicles (AGVs) and heavy electric forklifts operating across Holmen terminals run on 48V to 80V traction chemistry. Eltrum step-down modules handle extreme dynamic inductive surges, powering LIDAR, steering encoders, and optical guidance arrays without system resets.
Utility & Overland Dual-Battery Fleets
Emergency rescue fleets and municipal utility vehicles deployed in mountainous terrains surrounding Drammen employ Eltrum battery-to-battery (B2B) chargers. These units regulate intelligent alternator output to deliver customized CC/CV profiles to auxiliary LiFePO4 batteries regardless of alternator throttling.
Technical Architecture
Topology Selection Framework for Nordic Procurement Teams
Analyze fundamental mechanical and electrical trade-offs to specify the precise conversion topology for your equipment specifications.
| Conversion Topology | Voltage Input Parameters | Galvanic Isolation | Efficiency Benchmark | Primary Nordic Application Target |
|---|---|---|---|---|
| Synchronous Buck (Step-Down) | 24V, 48V, 72V, 96V DC Nominal | Non-Isolated (Common Ground) | 94% – 97% | Commercial fleet lighting, telematics, heavy transport cab power |
| Synchronous Boost (Step-Up) | 9V – 16V, 18V – 32V DC | Non-Isolated (Common Ground) | 92% – 95% | Driving 24V/48V hydraulic pumps & linear actuators from 12V starter rails |
| Automatic Buck-Boost Stabilizer | Wide-Range: 8–40V, 10–60V DC | Non-Isolated (High Dynamic Range) | 91% – 94% | Protecting sensitive telecom and video monitoring during battery cranking |
| Galvanically Isolated Converter | 18–36V, 36–75V, 18–90V DC | Yes (1500V DC Breakout) | 88% – 92% | Marine bridge electronics, subsea robotics, rail transit signaling |
| Intelligent LiFePO4 B2B Charger | 10–36V, 18–90V (Smart Alternator) | Controlled Current Loop | 92% – 95% | Recreational vehicles, utility service bodies, cold-chain backup storage |
Emerging Technology Trends Across the Drammen Power Market
The Drammen and broader Østlandet industrial ecosystem is experiencing accelerated transformation characterized by three major structural technical shifts:
1. Shift Toward High-Voltage Architectures in Commercial Machinery: As construction machinery, maritime towing equipment, and transport chassis transition from 12V/24V architectures to 48V and 800V traction platforms, secondary voltage step-down converters must process higher input spans while maintaining ultra-compact form factors. High-frequency planar transformer integration and synchronous rectification MOSFETs have become essential to preserve volumetric power density.
2. Integration of Digital Bus Communications (RS485/CAN-Open): Traditional passive voltage converters are rapidly being superseded by smart converters. Engineering teams in Drammen now routinely mandate real-time telemetry output, including input voltage sag warnings, dynamic thermal throttling reporting, and programmable output charging limits. Eltrum's RS485 communication protocols seamlessly integrate with proprietary onboard industrial controllers to eliminate field diagnostic downtime.
3. Low-Temperature Lithium Iron Phosphate (LiFePO4) Battery Optimization: The adoption of LiFePO4 chemistry across Scandinavian logistics and maritime systems brings unique low-temperature vulnerabilities. Charging standard lithium cells below freezing temperatures (0°C) causes irreversible lithium metal plating, leading to catastrophic cell degradation and thermal runaway hazards. Modern converters and chargers manufactured by Eltrum feature cold-weather temperature compensation algorithms and BMS interlock triggers to protect expensive battery assets during intense Nordic winters.
Manufacturing Prowess
Engineered by Shenzhen Eltrum Electronic Co., Ltd.
Direct factory engineering expertise backed by rigorous quality assurance and end-to-end design-build flexibility.
Direct OEM/ODM Partnership for Scandinavian System Integrators
Founded in 2015, Shenzhen Eltrum Electronic Co., Ltd. is a recognized industry manufacturer dedicated exclusively to DC-DC converters, isolated power modules, waterproof AC-DC chargers, and high-density industrial switch-mode power supplies. With over 3,000 m² of modern manufacturing floor space and an engineering cohort spanning decades in power topology research, our facility operates strictly under verified ISO 9001 quality management procedures.
Unlike trading intermediaries, Eltrum controls the entire product life cycle: from precision magnetic core winding and automated high-speed Surface Mount Technology (SMT) assembly to automated vacuum potting, thermal chamber cycling, and 100% full-load burn-in stress testing. This rigorous manufacturing oversight ensures failure rates consistently under 0.15% across our entire catalog of 500+ standard models.
We actively empower Norwegian distributors, OEMs, and fleet conversion shops with complete customized solutions, including customized chassis profiles, proprietary input/output ratios, private-label silk-screening, and specialized thermal heatsink extrusions designed to fit tight engine bays and battery enclosures.
Procurement Knowledge Base
Frequently Asked Questions by Drammen Engineers & Buyers
Comprehensive engineering clarifications addressing the procurement, compliance, and thermal dynamics of voltage conversion hardware.
What environmental protections ensure these converters survive Norwegian road salts and sub-zero temperatures? +
All Eltrum waterproof converter models feature die-cast aluminum enclosures with integrated high-efficiency cooling fins, potted entirely with automotive-grade, flame-retardant (UL94V-0) thermoconductive epoxy or polyurethane resin. This creates an impermeable seal (rated IP67 or IP68) that isolates internal microelectronics from road salt solutions (calcium and sodium chloride), persistent ambient condensation, extreme vibrations up to 5G, and operational temperatures dipping down to -40°C.
Why is an isolated DC-DC converter necessary over a lower-cost non-isolated buck unit in marine and industrial setups? +
Non-isolated buck converters utilize a common negative ground plane between input and output. In marine applications (such as commercial boats operating in the Drammensfjord) or industrial battery equipment with high-voltage battery arrays, a common ground creates severe ground loops, electro-galvanic hull corrosion hazards, and hazardous EMI noise coupling into delicate navigation modems, CAN-transceivers, and transducers. An isolated converter provides optical and magnetic galvanic insulation (typically up to 1500V DC breakdown rating), completely separating grounds and securing system integrity.
How does an Eltrum DC-DC charger safeguard Euro 6 smart alternators on modern delivery vans? +
Modern Euro 6 commercial utility vans incorporate smart regenerative braking alternators that continuously modulate output voltage between 12.2V and 15.4V to optimize fuel efficiency. Connecting auxiliary lithium batteries directly causes severe undercharging or overcurrent trips. Eltrum battery-to-battery (B2B) chargers include intelligent ignition-sensing triggers and wide buck-boost voltage stabilization circuitry, drawing steady, pre-programmed currents from the vehicle alternator without overheating the alternator windings while delivering precise 3-stage CC/CV curves to auxiliary LiFePO4 house packs.
What Minimum Order Quantities (MOQ) and sample validation lead times apply for custom OEM designs? +
We recognize the critical nature of pilot validation. For our extensive catalog of 500+ standard models, minimum order quantities start at only 5 units, allowing Norwegian engineering departments to conduct rigorous bench and cold-weather prototype testing. For bespoke ODM projects—such as custom non-standard voltage ranges, custom cable harnesses, or RS485 communication firmware modifications—functional samples are typically engineered, validated, and dispatched within 12 to 18 working days.
Do Eltrum power systems satisfy European CE, RoHS, and EMC electrical directives? +
Yes. Every converter series is built within our ISO 9001 certified production facility and is fully compliant with CE directives, including EN 61000-6-3 (Radiated & Conducted Emissions) and EN 61000-6-1 (Immunity), ensuring zero interference with sensitive radios and maritime communication devices. Comprehensive RoHS testing declarations and conformity certificates are provided alongside technical datasheets for simplified Norwegian customs clearance and local documentation filings.
What payment conditions and delivery logistics are supported for Norwegian business entities? +
We offer flexible commercial procurement terms, including wire transfer (T/T), PayPal, and secure Escrow transactions in USD or EUR. Shipments to Drammen, Oslo, and greater Norway can be dispatched under Incoterms EXW, FOB, CIF, or DDP via rapid express air freight (DHL, FedEx, UPS) for urgent maintenance parts or consolidated container sea shipping via Oslo and Drammen ports for high-volume serial assembly supply lines.
Accelerate Your Power Electronics Development with Eltrum
Discuss your voltage specifications, load dynamics, or volume requirements directly with our senior application engineers. We offer complete custom design services and standard stock units ready for rapid prototyping.