Smart 36V Lithium Battery Charger DC 12V to 43.8V Waterproof 13A
- TopologyBoost / Step-Up CC-CV
- Input Voltage12V DC (Alternator/Traction)
- Output Profile43.8V @ 13A (LiFePO4)
- ProtectionIP67 Waterproof Potted
Engineered For Critical Environments
High-Performance Power Converters & Chargers
Pre-tested against sub-zero transients, variable input ripples, and demanding duty cycles. OEM/ODM volume supply with direct factory engineering support for Espoo R&D teams and Nordic distributors.
1500W High-Power Buck-Boost Voltage Stabilizer (RS485)
- TopologySynchronous Buck-Boost
- Input Range10V–60V Ultra-Wide DC
- Output Regulated12V / 24V / 28V / 48V
- TelemetryRS485 Modbus RTU
DC 10–44V to 12V 50A/60A Automatic Buck-Boost Regulator
- Topology4-Switch Buck-Boost
- Continuous Output12.0V DC (Up to 720W)
- Peak Current60A Surge Handling
- Thermal MgmtExtruded Aluminum Fin
8–40V to 13.8V 25A/30A Marine Clean-Power Stabilizer
- Target Rail13.8V Lead-Acid & Radio Rail
- Input Range8V to 40V DC
- Full Load EfficiencyUp to 96%
- Sealing ClassIP68 Anti-Corrosion
18–90V to 12V 10A Industrially Isolated DC Converter
- Isolation Barrier1500V DC Galvanic
- ApplicationTelecom, AGV, Industrial
- Output Current10A Constant Current
- HousingSilicone Filled Sealed
Heavy Duty 24V to 12V 85A/100A Fleet Step-Down Converter
- Continuous Amps85A–100A Low Resistance
- Input CompatibilityCommercial 24V Bussing
- Transient ClampTVS Overvoltage Suppressor
- CertificationsCE / RoHS / ISO 9001
30–90V (48V/72V) to 24V 20A Mobile Machinery Converter
- Input Swing30V–90V High Line Voltage
- Output Rail24V Auxiliary Electronics
- Cold ResilienceOperating Down to -40°C
- Design ServiceOEM Buyer-Label Supported
8–40V to 12V Precision Sensor & Telematics Buck-Boost
- Form FactorUltra-Compact IP67 Enclosure
- Noise PerformanceLow EMI, Ripple < 50mVp-p
- Standby CurrentUltra-Low < 10mA Quiescent
- Sample DeliveryAvailable from 5 Units
Nordic Engineering Ecosystem
High-Efficiency DC Power Applications Across Espoo & Uusimaa
Espoo is globally recognized as the technological innovation capital of Finland, anchored by the Otaniemi science park, VTT Technical Research Centre, and leading clean technology clusters. Demanding field conditions define engineering requirements here: cold starts down to -35°C, salt mist along the Gulf of Finland, and rapid conversion toward hybrid-electric drivetrains.
Archipelago Marine & Autonomous Vessels
Navigating the complex Finnish archipelago requires uncompromised DC bus stability. Eltrum's buck-boost regulators isolate and deliver continuous 12.0V or 24.0V outputs for LIDAR, sonar transducers, GPS navigational receivers, and edge-computing processors. Even when bow thrusters or battery warmers induce sharp DC line dips down to 9V, our converters maintain line regulation without rebooting critical navigation computers.
CleanTech, Off-Grid Telecom & Solar Cabin Microgrids
Scandinavia experiences dramatic solar irradiance swings between seasons. In Finnish telecom backhauls and remote forest monitoring platforms, solar PV array outputs fluctuate significantly while charging secondary LiFePO4 batteries. Our 10–60V wide-input buck-boost converters step up weak autumn solar inputs and step down midday charges, providing reliable 24V or 48V power directly to Nokia-adjacent telecommunications hardware.
Heavy Forestry, Mining & Electric Commercial Fleets
Finnish heavy mobile equipment operates under continuous mechanical shock, vibrational stresses, and heavy electrical spikes (load-dump conditions). Deploying non-isolated or poorly protected power modules leads to premature gate-driver breakdown. Eltrum converters feature built-in TVS clamps, reverse polarity protection, and robust potting that absorbs harmonic vibrations up to 20G, guaranteeing zero-downtime performance in forestry harvesters.
Engineering Whitepaper
Mitigating Ground Potential Shifts & Cold-Weather Cranking Drops
In standard vehicle and vessel architectures, common ground returns experience substantial potential shifts when high-amperage winches, heaters, or inverters kick in. For hardware developers in Espoo working on smart mobility and robotics, this presents a severe risk of ground looping and sensor drifting.
Shenzhen Eltrum Electronic solves this through two architectural methodologies: 4-switch synchronous buck-boost topology with non-inverting seamless transitions, and high-isolation planar transformer modules providing up to 1500V DC dielectric isolation. Furthermore, our magnetic cores are vacuum impregnated to eliminate microphonics and withstand the sudden thermal contractions characteristic of Finnish sub-zero deployments.
Future-Proof Market Architecture
Emerging Power Electronics Trends in Finland's Tech Corridor
As the European Union intensifies mandates under the Green Deal and Fit for 55 legislation, electrical engineers in Espoo are overhauling legacy DC distribution architectures. Three primary technological transitions dominate present procurement cycles:
Migration from 12V/24V to 48V/96V Distribution
To reduce copper weight, ohmic harness losses, and connector footprints, modern Nordic utility vehicles and autonomous robots are standardizing on 48V nominal traction architectures. However, legacy peripherals—such as 12V radar, communications, and safety interlocks—remain ubiquitous. This paradigm requires bi-directional and wide-window buck-boost modules that step between 48V and 12V with minimal heat dissipation inside sealed chassis.
Silicon Carbide (SiC) & High-Frequency Magnetics
Space and weight constraints in automated maritime platforms demand power densities exceeding 30W/in³. High-switching-frequency conversion reduces inductor and capacitor envelope volumes while maintaining low thermal resistance. Our R&D team implements optimized MOSFET low-RDS(on) synchronous switching, enabling Scandinavian developers to shrink equipment enclosures while operating in unventilated IP67 cavities.
Digital CAN Bus & RS485 Real-Time Telemetry
Unmonitored power converters are obsolete in autonomous fleets. Original equipment manufacturers in Espoo increasingly mandate intelligent DC-DC units capable of transmitting voltage, current draw, heat sink temperature, and fault status via RS485 Modbus or CAN communication. Eltrum's programmable 1500W platforms empower central vehicle ECUs to execute intelligent load shedding during battery depletion events.
| Conversion Topology | Nominal Input Range | Regulated Output | Efficiency | Target Nordic Application Environment |
|---|---|---|---|---|
| Buck-Boost (Automatic) | 8V – 40V / 10V – 60V | 12V, 13.8V, 24V, 48V | 94% – 96% | Battery voltage stabilizer, marine avionics, fluctuating off-grid solar |
| Galvanic Isolated DC-DC | 18V – 90V (Wide Multi-Rail) | 5V, 12V, 24V Regulated | 88% – 92% | Positive-ground telecom racks, industrial AGVs, noise-sensitive medical carts |
| High-Current Buck | 24V, 48V, 72V, 80V | 12V (Up to 100A) | 95% – 97% | Electric bus auxiliaries, mining machinery, commercial fleet step-down |
| Step-Up Boost Converter | 10V – 30V Input | 24V, 36V, 48V High Line | 93% – 96% | Electric mobility boosters, LED arrays, motor drivers on 12V battery banks |
Enterprise Reliability & Authority
Why Espoo Engineers & Nordic Importers Choose Eltrum
Shenzhen Eltrum Electronic Co., Ltd. has delivered precision power conversion equipment since 2015. Onsite verified by third-party inspection authorities, our manufacturing infrastructure bridges agile Shenzhen engineering speed with strict international standards.
ISO 9001:2015 & CE Certified
Every converter series adheres to stringent European electromagnetic compatibility (EN 61000-6-3 / EN 61000-6-1) and RoHS environmental directives, ensuring trouble-free customs clearance and Finnish safety compliance.
Rapid Prototyping (MOQ: 5 Pcs)
We empower R&D verification. Unlike rigid manufacturers demanding 500-unit minimums, our standard evaluation units ship from just 5 pieces, allowing Espoo engineering labs to run dynamic bench tests within days.
Full OEM / ODM Customization
Need custom charging profiles, Deutsch or Anderson industrial connectors, bespoke enclosure pinouts, or private-label laser etching? Our factory-backed R&D handles turnkey hardware modifications.
100% Full-Load Burn-In Testing
Zero field dropouts is our manufacturing benchmark. Every production unit completes thermal cycle and full-load burn-in validation before packaging, assuring flawless operation across Nordic freeze-thaw cycles.
Direct Answers
Frequently Asked Questions by Finnish Engineers & Importers
Key technical, logistic, and compliance considerations when sourcing DC-DC power conversion hardware directly from our Shenzhen manufacturing plant to Espoo, Helsinki-Vantaa, and greater Finland.
How do Eltrum buck-boost converters behave in sub-zero Finnish winters (-30°C)?
Our converters utilize industrial automotive-grade components with operational temperature ratings between -40°C and +85°C. Crucially, we specify low-ESR solid electrolytic and ceramic capacitors rather than standard wet aluminum capacitors, preventing capacitance contraction and cold-boot ripple spikes. The fully encapsulated silicone potting material retains elastic damping properties without cracking or shrinking under extreme thermal shocks.
What are typical air freight lead times from Shenzhen to Espoo or Helsinki?
For sample orders and rapid R&D batches (5 to 50 units), we ship via DHL Express, FedEx, or UPS direct from Shenzhen to Helsinki-Vantaa Airport (HEL), typically reaching your facility in Otaniemi or Keilaniemi within 4 to 7 business days. For volume container production (FOB Shenzhen or CIF Helsinki), sea-rail or maritime shipping schedules generally range between 28 and 35 calendar days.
Do these converters generate electromagnetic interference (EMI) on marine radios?
Marine installations are notorious for sensitive VHF radios, AIS, and GPS transceivers. Eltrum buck-boost and boost units incorporate multi-stage LC pi-filtering on both input and output stages, combined with closed aluminum die-cast housings that provide 360-degree Faraday shielding. Our units comply with CE EN 55032 Class B emission standards, suppressing high-frequency switching harmonics.
Can your converters be customized for specific LiFePO4 or LTO battery charge profiles?
Yes. While standard models output fixed stabilized voltages (12V, 24V, 48V), our DC-DC charger models (such as our 400W and 600W series) provide factory-calibrated Constant Current / Constant Voltage (CC/CV) profiles tailored precisely to your pack chemistry. We routinely configure absorption, float, and cutoff setpoints for LiFePO4 (e.g., 14.6V or 29.2V) and Lithium Titanate (LTO) upon request.
What payment terms and transaction methods are accepted for Finnish corporate entities?
We work seamlessly with international B2B buyers via Wire Transfer (T/T in EUR or USD), PayPal for rapid sampling, and Escrow / Trade Assurance for volume security. Verified repeat OEM clients can also establish flexible credit terms following initial trading history.
What is the difference between an isolated and a non-isolated buck-boost converter?
Non-isolated converters share a common negative (ground) rail between input and output. They achieve higher electrical efficiencies (up to 96%) and smaller physical sizes, making them ideal for standard automotive, solar, and marine applications. Isolated converters incorporate an internal high-frequency transformer that physically breaks the electrical connection between input and output grounds. You should specify isolated modules if you are dealing with positive-ground legacy communications, forklift traction packs, or high-noise industrial PLCs.
Consult with an Eltrum Power Application Engineer
Share your target input voltage swing, nominal output load, enclosure requirements, and annual volume. Our technical sales team provides datasheets, 3D CAD step files, and formal quotation proposals within 24 business hours.