Smart 36V Lithium Battery Charger DC 12V to 43.8V 13A
- TopologyDC-DC Step-Up Charger
- Input Voltage10V – 36V DC
- Output / Current43.8V DC • 13A (CC/CV)
- EnclosureIP67 Waterproof Potted
Direct OEM Catalog
Featured Industrial & Mobile Power Conversion Modules
Tested and certified for harsh electrical transients in heavy machinery, German railway auxiliaries, and maritime energy storage. Backed by our ISO 9001 certified manufacturing plant with flexible MOQs starting from 5 sample units.
600W Waterproof AC-DC LiFePO4 Charging Station
- TopologyAC-DC Resonant PFC
- Input Voltage90V – 265V AC Mains
- Output Rails14.6V / 29.2V / 58.4V
- Efficiency> 93.5% Peak
Heavy-Duty 600W Waterproof Boat & AGV Charger
- PlatformUniversal Battery Charger
- Nominal Battery12V / 24V / 36V / 48V
- Thermal DissipationSealed Die-Cast Aluminum
- ProtectionsOVP, OCP, OTP, Reverse Pol.
300W Marine LiFePO4 Charger with Schuko EU Plug
- AC ConnectionCEE 7/7 Schuko / UK / US
- DC Output14.6V / 29.2V / 43.8V / 58.4V
- Ingress RatingIP65 Hermetic Seal
- CertificationCE / RoHS / ISO 9001
400W Waterproof DC-DC Dual Battery System Charger
- Input Voltage10V – 36V Wide DC
- Output Charging14.6V / 29.2V / 43.8V CC/CV
- Power Density400W Continuous Rated
- ApplicationEuro 6 Smart Alternators
1500W High-Power Buck-Boost DC Stabilizer (RS485)
- Input Window10V – 60V Continuous
- Regulated Output12V / 24V / 28V / 48V DC
- TelemetryRS485 Modbus RTU
- CoolingIntegrated Heat Sink Fins
10–44V to 12V 50A/60A Busbar Voltage Stabilizer
- Continuous AmpsUp to 60A Output
- Output Power720W Max Output
- ProtectionThermal Foldback & Short-Ckt
- ChassisHeavy Gauge Aluminum Case
18–75V to 24V 5A Galvanic Isolated Converter
- Galvanic Barrier1500V DC Primary-to-Secondary
- Input Range18–36V / 36–75V Telecom
- Output Rail24V DC • 120W Stable
- EMC ComplianceEN 55032 Class B Filtering
Bridging Shenzhen Fabs with German Engineering
Custom OEM Power Conversion Engineered for the Berlin-Brandenburg Corridor
The Berlin metropolitan region has transformed into Europe's premier epicenter for hardware innovation, deep-tech robotics, clean mobility, and smart grid automation. From testing laboratories at WISTA Science & Technology Park in Berlin-Adlershof to green-energy production lines in CleanTech Business Park Marzahn, regional hardware designers demand power supply modules that offer uncompromised conversion efficiency, ultra-compact form factors, and absolute compliance with European Union electromagnetic compatibility (EMC) regulations.
Founded in 2015, Shenzhen Eltrum Electronic Co., Ltd. serves as the specialized OEM & ODM manufacturing engine behind leading industrial automation brands and equipment integrators across Germany, Austria, and Switzerland (DACH). While Berlin-based engineering consultancies and system integrators craft leading-edge intellectual property, our 3,000 m² modern manufacturing facility executes precision SMT assembly, automated polyurethane and epoxy potting, and strict 100% burn-in testing under ISO 9001 certified protocols.
- Bespoke Input/Output Profiles: Custom charging voltages (e.g., 14.6V, 29.2V, 43.8V, 58.4V) optimized for specialized ternary lithium, sodium-ion, and LiFePO4 cell arrangements.
- Automated Environmental Potting: IP65, IP67, and IP68 vacuum silicone resin encapsulation preventing moisture ingress, vibration wear, and chemical degradation in field deployments.
- Smart Industrial Fieldbus: Optional RS485 / Modbus RTU telemetry integrations for continuous current/voltage reporting directly into PLC networks.
- Low MOQ for German Prototyping: Rapid engineering sampling from 5 units, empowering development teams to perform accelerated life testing (HALT) prior to volume batch orders.
Precision Industrial Applications
Where Berlin's Tech Pioneers Deploy Eltrum Custom Modules
Meeting exact thermal, galvanic, and shock-resistance specifications across demanding industrial, logistics, and renewable energy sectors in Central Europe.
AGVs & Autonomous Intralogistics
Automated Guided Vehicles (AGVs) operating in logistic hubs near Berlin-Brandenburg Airport (BER) leverage our 48V-to-12V and 48V-to-24V step-down converters. Delivering ripple-free auxiliary power to LiDAR sensors, robotic arms, industrial PCs, and optical encoders without tripping under sudden traction motor acceleration spikes.
CleanTech Solar & Microgrids
In distributed PV storage and hybrid mini-grids deployed in Brandenburg's countryside, voltage swing from solar strings and lead-carbon or lithium storage banks can destabilize sensitive electronics. Our wide-input 10V–60V buck-boost stabilizers ensure a precise 24V or 48V DC bus rail remains locked regardless of sunlight irradiance variations.
Commercial Fleet & RV Dual-Battery
Modern Euro 6 and Euro 7 commercial delivery vans, refrigerated trucks, and bespoke camper vans engineered by German coachbuilders require smart alternator charging. Our DC-DC battery chargers condition fluctuating alternator current into a precision CC/CV charge profile that maximizes LiFePO4 service life without overloading starter systems.
Maritime & Spree River Electric Craft
Berlin's ambitious waterway electrification initiative requires rugged, salt-mist resistant power electronics. Our IP67 hermetically potted AC-DC chargers (300W to 1000W) withstand moisture, continuous wave shocks, and ambient condensation, providing dependable shore-power charging to commercial tourist barges and recreational crafts.
Telecom & Critical Edge Networks
Galvanic isolation is crucial when powering cellular towers, optical routing nodes, and trackside train signaling along Deutsche Bahn routes. Our 18V–75V isolated DC-DC modules provide a 1500V DC breakdown barrier, eradicating ground loops, common-mode noise, and transient switching spikes from sensitive 5V and 12V microprocessors.
Medical Carts & Cleanroom Robotics
From healthcare laboratories in Berlin-Buch to sterile pharmaceutical manufacturing, our silent, fanless power converters deliver ultra-low electromagnetic interference (EMI). Conforming to EN 55032 Class B residential radiation thresholds, ensuring life-support systems and sensitive spectrometers remain unaffected.
Engineering Whitepaper • Power Electronics
Matching Conversion Topology to German Industrial Standards
Selecting the exact converter architecture prevents thermal derating, harmonic feedback, and premature field failure in continuous 24/7 industrial duty cycles.
| Topology | Input Voltage Window | Nominal Outputs | Peak Efficiency | Galvanic Isolation | Typical Industrial Mission |
|---|---|---|---|---|---|
| BUCK (Step-Down) | 24V, 48V, 72V, 96V DC | 5V, 12V, 24V DC | Up to 96.5% | Non-Isolated (Common GND) | Stepping down 48V/72V e-mobility battery banks to drive 12V lighting, horns, and CAN bus sensors. |
| BOOST (Step-Up) | 10V – 16V, 18V – 32V DC | 24V, 36V, 48V DC | Up to 95.0% | Non-Isolated | Raising 12V starter battery or single solar bank rails to 48V for brushless motors, pumps, and high-intensity LED arrays. |
| BUCK-BOOST | 8V – 40V, 10V – 60V Wide | 12V, 13.8V, 24V, 28V | Up to 94.0% | Non-Isolated (Stabilized) | Stabilizing fluctuating DC buses during engine cold-cranking (down to 8V) or high-voltage alternations (up to 32V). |
| GALVANIC ISOLATED | 18V – 36V, 36V – 75V, 18V – 90V | 5V, 12V, 24V DC | Up to 91.5% | 1500V DC / 1 Min Isolation | Telecom racks, ground-isolated forklift controllers, and high-noise automation cabinets requiring ground loop prevention. |
Planar Magnetics
Replacing traditional wound toroids with multilayer PCB planar transformers drastically reduces parasitic inductance, decreases unit profile heights by 40%, and guarantees identical thermal performance across large production volumes.
Synchronous Rectification
Deploying ultra-low RDS(on) MOSFET switches in place of Schottky diodes slashes conduction losses at high current outputs (up to 100A), keeping internal temperatures cool even in unventilated IP67 sealed housings.
Active Thermal Foldback
Rather than suffering catastrophic thermal shutdown when operating in elevated ambient temperatures (+65°C), our intelligent firmware gradually scales back maximum current output, maintaining vital sensor communications alive without interruption.
German EMC Harmonization
Multi-stage common-mode and differential-mode LC filters combined with grounded aluminum enclosures ensure compliance with DIN EN 61000-6-3 (Emissions) and DIN EN 61000-6-2 (Industrial Immunity) standards.
Industry Dynamics & Future Outlook
Technological Drivers Shaping Power Electronics in Germany
Strategic alignment with the European Green Deal, DIN compliance updates, and next-generation wide bandgap semiconductors.
Gallium Nitride (GaN) & SiC Adoption
German industrial buyers are progressively moving away from legacy silicon towards Gallium Nitride (GaN) and Silicon Carbide (SiC) switching topologies. By switching frequencies exceeding 300 kHz, custom OEM power supplies achieve power densities greater than 35W/in³, slashing overall payload weights in drone and robotics applications.
EU Ecodesign Directive & Standby Efficiency
With strict adherence to EU Ecodesign standards and ErP Lot 7, Berlin procurement officers demand no-load quiescent currents under 1.5mA. Eltrum's modern digital control loops throttle switching during idle states, conserving battery capacity across prolonged seasonal winter storage in Germany.
Decentralized Direct Current (DC) Microgrids
To bypass intermediate DC-AC-DC inverter losses, modern Berlin commercial parks are retrofitting direct-DC microgrids operating at 380V or 48V DC. Our high-voltage DC-DC converter series provide direct down-conversion to 12V and 24V equipment without requiring bulky AC distribution transformers.
World-Class OEM/ODM Execution
Shenzhen Eltrum: Reliable Power Supply Manufacturing Partner
Shenzhen Eltrum Electronic Co., Ltd. combines nearly a decade of dedicated switching power supply development with strict international quality controls. Our production engineering team collaborates directly with technical managers across Europe to overcome specific electrical and packaging bottlenecks.
Automated SMT Production
High-speed Yamaha surface mount machines deliver 0201 component placement accuracy and high coplanarity across complex power PCBs.
Vacuum Resin Potting
Automated two-part thermal compound degassing prevents micro-voids, ensuring uniform heat transfer and verified IP68 submersion survival.
100% Full-Load Burn-In
Every serial production module undergoes 4 to 8 hours of continuous 100% full-load thermal burn-in chamber testing before packaging.
Custom Private Labeling
Laser engraving of buyer brand names, model IDs, barcode serialization, and bespoke wire-loom connector terminations (Molex, Deutsch, Anderson).
Procurement & Compliance Clarifications
Frequently Asked Questions by German Engineering Teams
Everything technical procurement directors in Berlin need to know regarding certifications, customs, sample validation, and custom lead times.
Do your power supply modules and chargers comply with EU CE, RoHS, and REACH directives?
Yes. All standard and customized Eltrum power supply modules, buck-boost converters, and LiFePO4 battery chargers conform to the Low Voltage Directive (LVD 2014/35/EU) and Electromagnetic Compatibility Directive (EMC 2014/30/EU). Our components are audited under RoHS (EU) 2015/863 and REACH regulations. Full laboratory test reports and Declarations of Conformity (DoC) can be issued for technical construction files upon request.
What is the standard turnaround time for custom prototype engineering and delivery to Berlin?
For modifications of existing power stages (e.g., custom output voltage such as 27.6V, specific CC/CV charging curves, or bespoke Deutsch/Molex harness terminations), engineering prototypes are finalized within 7 to 12 working days. Express door-to-door courier transit to Berlin, Hamburg, or Munich via DHL Express or FedEx takes approximately 3 to 5 business days, including air customs pre-clearance.
How do you handle minimum order quantities (MOQs) for pilot production runs?
We understand that German hardware engineering bureaus and automation startups must validate prototypes in end-equipment before committing to volume manufacturing. Most standard converter modules and chargers feature an ultra-flexible sampling MOQ of just 5 pieces. Selected high-power 1500W modules have an MOQ of 1 to 2 units, while fully custom PCB layout designs typically start at 50 to 100 units for batch production.
Can your factory configure the charging profiles for non-standard battery chemistries?
Absolutely. While standard firmware is preset for 4S, 8S, 12S, or 16S LiFePO4 (3.65V per cell target) and standard ternary NMC lithium cells, our microprocessor-controlled platforms allow exact calibration of bulk, absorption, float, and cut-off voltages. We also customize temperature compensation sensors and RS485 / CAN bus handshakes to interface seamlessly with your specific Battery Management System (BMS).
What trade terms (Incoterms) and payment methods are supported for German corporate clients?
We routinely operate under FCA, FOB Shenzhen, and CIF / DDP (Delivered Duty Paid) terms into Germany. For payment, we accept direct international wire transfer (T/T in EUR or USD), verified Letters of Credit (L/C) for container volume orders, and PayPal / Escrow for preliminary sample validation orders.
How does Eltrum guarantee thermal stability in unventilated IP67 sealed housings?
Our modules feature high-density extruded aluminum shells with engineered surface thermal radiation fins. By utilizing vacuum-assisted silicone potting with a thermal conductivity coefficient exceeding 1.2 W/m-K, internal component hotspots are eliminated. Thermal energy is conducted straight to the outer chassis, allowing fanless convection cooling up to +60°C ambient operating temperatures.
Accelerate Your Power Supply Engineering with Eltrum OEM
Whether you require a sample evaluation batch of 5 units for testing in Berlin or high-volume private label manufacturing for your next automated machine line, our senior power supply engineers are ready to assist with full datasheets, 3D CAD step files, and competitive B2B factory pricing.
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