Industrial-Grade DC Chargers & Converters for Nordic Deployment
Tested rigorously under severe thermal cyclings, saline mist corrosion, and high vibration stresses. Directly supplied to commercial fleet builders, marine retrofits, and automation system integrators across Gothenburg.
Smart 36V 13A Waterproof DC-DC Lithium Charger
- Input VoltageDC 12V (9V–16V)
- Output CC/CV43.8V @ 13A (570W)
- Efficiency≥ 94.5%
- Ingress RatingFully Sealed IP67
600W Waterproof LiFePO4 AC-DC Smart Charger
- Mains Input90V–264V AC Wide
- Output Range14.6V / 29.2V / 58.4V
- Charging Logic3-Stage Microcontroller
- ProtectionThermal Foldback & OVP
600W Multi-Voltage Marine & Commercial EV Charger
- Nominal Config12V / 24V / 36V / 48V
- Potted EnclosureDie-cast Aluminum IP68
- Cold StartDown to -40°C Unassisted
- ComplianceCE, RoHS, EN 60335
300W Auxiliary Marine LiFePO4 Charger
- Output Rails14.6V / 29.2V / 43.8V
- Plugs AvailableEU CEE 7/7 & Schuko
- Cooling DesignPassive Heatsink Fin
- Vibration ProofISO 16750-3 8G Standard
400W 10-36V DC-DC Battery-to-Battery Charger
- Alternator Input10V–36V DC Dynamic
- Auxiliary Bank14.6V / 29.2V Regulated
- Smart IgnitionEuro 6 Alternator Sense
- IsolationChassis Decoupled
1500W Buck-Boost Converter with RS485 Telemetry
- Input Flexibility10V–60V Ultra-Wide
- Config Output12V / 24V / 28V / 48V
- Bus ControlMODBUS RTU / RS485
- Peak CurrentUp to 60A Continuous
1000W Heavy-Duty IP65 LiFePO4 Fleet Charger
- Input TopologyUniversal Active PFC
- DC OutputUp to 58.4V @ 20A
- EnclosureHermetic Anti-Corrosion
- OEM LabelsCustom Firmware & Curves
18-90V Galvanically Isolated DC-DC Converter
- Wide DC In18V–90V Traction Inputs
- Clean DC Out12.0V or 24.0V Regulated
- Isolation1500VDC Input-to-Output
- Noise FilteringClass B EMC Conducted
Power Topologies Engineered for the Gothenburg Decarbonization Mandate
Gothenburg is rapidly setting the global standard for industrial electrification. As home to the largest port in the Nordic region, premier commercial automotive manufacturing clusters in Torslanda and Lindholmen, and the groundbreaking Green City Zone initiatives, the region demands an uncompromising standard for onboard and stationary DC power systems. Designing DC-to-DC battery chargers and converters for this geography is fundamentally distinct from standard consumer power electronics; it mandates advanced mitigation against harsh climatic swings, high humidity, sub-zero lithium chemistry behaviors, and heavy mechanical vibrations.
At Shenzhen Eltrum Electronic Co., Ltd., our engineering division addresses the technical frictions commonly experienced by Scandinavian systems integrators. The primary hazard in cold-climate LiFePO4 battery management is charging below 0°C without active thermal regulation, which accelerates metallic lithium plating on graphite anodes, causing irreversible capacity degradation and internal micro-short-circuits. Eltrum's OEM/ODM DC-DC battery chargers feature integrated temperature-sensing protocols and adaptive CC/CV charging curves that throttle charging current dynamically or interface directly with battery management systems (BMS) via isolated CAN 2.0B or RS485 links.
Furthermore, modern commercial vehicles and marine vessels operating under Euro 6/Euro 7 standards and hybrid electric architectures deploy smart regenerative alternators. These alternators introduce sharp voltage fluctuations ranging from 11.8V to 15.4V in seconds. Eltrum’s buck-boost DC charging architecture maintains absolute voltage stability (ripple < 50mV peak-to-peak), isolating sensitive navigational instrumentation, radar arrays, and onboard telematics from inductive spikes and sudden brownouts.
Tailored Deployment Across Gothenburg’s Electrification Landscape
Precision electrical matching for commercial harbors, urban zero-emission transport corridors, and rigorous Nordic off-grid systems.
1. Port of Gothenburg: Maritime & Shore-Power Integration
The Port of Gothenburg has committed to slashing quayside and vessel emissions by 70% by 2030. In hybrid passenger ferries, harbor tugs, and workboats navigating the Kattegat archipelago, corrosive salt mist and sea spray present constant reliability challenges.
Eltrum supplies custom IP67 and IP68 hermetically potted DC-DC chargers and buck converters ranging from 300W to 1500W. Sealed within corrosion-resistant anodized aluminum alloy casings, our units withstand continuous salt-fog exposure per ASTM B117 standards. They seamlessly bridge 24V marine service banks to auxiliary 12V navigation, Sonar, AIS, and emergency radio systems without galvanic ground loops.
2. Heavy Commercial EVs & AGVs in Torslanda Logistics
Gothenburg serves as the nucleus for heavy truck engineering and electrified logistics corridors. Autonomous Guided Vehicles (AGVs) and electric terminal tractors operating within container terminals utilize 48V, 72V, or high-voltage traction batteries.
Our wide-input isolated DC-DC converters (18V–90V in) step down traction power directly to provide ultra-clean 12V and 24V supply for LiDAR sensors, drive-by-wire microcontrollers, and telematics hubs. Galvanic isolation up to 1500VDC guarantees complete electrical decoupling, protecting sensitive silicon from switching transients generated by high-power traction inverters.
3. Nordic Off-Grid Cabin & Arctic Telematics Systems
Throughout Western Sweden and the broader Scandinavian wilderness, off-grid telecom repeater stations, forestry equipment, and specialized camper conversions depend on secondary lithium house batteries paired with fluctuating renewable inputs (solar PV arrays and wind generators).
Eltrum's multi-stage DC-DC battery chargers utilize precision maximum power point tracking algorithms and buck-boost regulation. Whether the source swings to 8V during low battery state or climbs to 40V in bright cold sunshine, our chargers maintain an exact constant-current/constant-voltage profile, preserving battery cycle life over decades.
Västra Götaland's Green Transition: Sourcing Direct from Tier-1 ODM Partners
The manufacturing ecosystem surrounding Gothenburg is transitioning rapidly toward net-zero industrial production. Procurement directors and electrical design engineers at Tier-1 automotive and marine companies face increasing scrutiny under the EU Corporate Sustainability Due Diligence Directive (CSDDD) and tightened RoHS/WEEE recyclability benchmarks.
Working directly with a proven Shenzhen manufacturer like Eltrum circumvents the compounding markups, protracted lead times, and inflexible firmware constraints imposed by European domestic re-packagers. By establishing direct OEM/ODM engineering ties, Gothenburg procurement teams gain access to:
- Custom Firmware Calibration: Tailoring absorption times, float thresholds, and low-temperature cutoff triggers specifically for sub-zero lithium ferrophosphate and nickel-manganese-cobalt chemistries.
- Direct Bill-of-Materials (BOM) Traceability: Premium Japanese solid electrolytic capacitors, AEC-Q automotive-grade MOSFET switches, and Class-H magnetic windings capable of continuous thermal cycling.
- Rapid Sample Turnaround: Prototype samples shipped to Landvetter Airport or Gothenburg port via consolidated air/sea freight within 7 business days, with minimal sample MOQs starting from just 5 units.
Gothenburg OEM Power Conversion Selection Matrix
Standard architectural parameters across Eltrum’s high-volume industrial product lines.
| Module Family | Input Envelope | Regulated DC Outputs | Thermal Operating Range | Galvanic Isolation | Gothenburg Target Application |
|---|---|---|---|---|---|
| Non-Isolated Buck | 24V, 36V, 48V, 72V DC | 5V, 12V, 13.8V, 24V (Up to 100A) | -30°C to +75°C | Common Ground Chassis | Electric buses, harbor utility carts, LED masts |
| Wide-Range Boost | 10V–30V DC | 24V, 36V, 48V (Up to 50A) | -35°C to +80°C | No | 12V vehicle architectures powering 48V auxiliary pumps |
| Synchronous Buck-Boost | 9V–40V / 10V–60V DC | 12V, 19V, 24V, 28V, 48V (1500W) | -40°C to +85°C | No (RS485 Telemetry) | Commercial fleet dual-battery charging & voltage stabilization |
| Galvanically Isolated | 18V–36V / 36V–75V / 18V–90V | 5V, 12V, 24V (Regulated ±1%) | -40°C to +85°C | 1500VDC / 100MΩ Min | Telecom transceivers, rail transit, AGVs, high-voltage battery packs |
| Smart LiFePO4 Chargers | DC 10–36V / AC 90–264V | 14.6V, 29.2V, 43.8V, 58.4V (CC/CV) | -40°C to +65°C | Reinforced Class II / Optical | Electric boat house banks, autonomous sweepers, RV retrofits |
Direct Factory Capability: Shenzhen Eltrum Electronic Co., Ltd.
Established in 2015, Shenzhen Eltrum Electronic Co., Ltd. operates a modern 3,000 m² clean-room production and surface-mount technology (SMT) assembly plant in Shenzhen, China. Our enterprise is anchored by ISO 9001 certified quality management protocols, verified onsite by world-class third-party inspection agencies.
With an experienced in-house R&D engineering cohort and specialized testing laboratories, every single DC charger unit undergoes 100% full-load thermal burn-in testing, multi-axis harmonic vibration screening, and high-voltage insulation withstand verification before leaving our docks.
We support full OEM/ODM engagements for Swedish enterprises: from CAD enclosure modeling and heatsink thermal simulation to custom buyer-label silkscreening, customized wiring looms (Deutsch, Anderson, or Amphenol connectors), and bespoke CAN-bus communication matrices.
Frequently Asked Questions by Swedish Engineering Buyers
Clear, direct answers regarding compliance, thermal adaptation, shipping logistics, and custom manufacturing runs.
Are Eltrum DC battery chargers fully compliant with European Union and Swedish safety regulations?
How do your chargers protect LiFePO4 batteries during Swedish sub-zero winter temperatures?
What are your typical shipping lead times and DDP delivery terms to Gothenburg?
Can Eltrum develop custom DC-DC charging curves for non-standard battery voltages?
What level of vibration and salt-spray ingress protection do your units provide for marine vessels?
What is the minimum order quantity (MOQ) for custom OEM buyer branding and connector configurations?
Accelerate Your Gothenburg Electrification Project Today
Consult directly with Shenzhen Eltrum’s senior power electronics engineers. Whether you need standard samples dispatched to Gothenburg this week or a bespoke OEM/ODM power conversion design, our team is ready to support your technical specifications.
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