Smart 36V 13A Waterproof LiFePO4 Dual Battery Charger
- TopologyBoost Buck-Regulated
- Input Voltage12V DC Nominal (9–16V)
- Output Voltage43.8V Constant (13A)
- EnclosureIP67 Die-Cast Aluminum
Enterprise Product Portfolio
High-Efficiency DC-DC Dual Battery Systems & Converters
Engineered to resolve smart alternator voltage drops, auxiliary bank overcharging, and inter-system noise in demanding operational environments across Poland and Central Europe.
400W 12V/24V Multi-Profile DC-DC Charger
- Input Range10–36V Auto-Detection
- Output Rails14.6V / 29.2V Dual Profile
- Control LogicAlternator Smart Ignition
- Thermal Range-40°C to +85°C Derated
1500W Dynamic Buck-Boost Stabilizer
- Input Window10–60V DC Continuous
- Output Rails12V / 24V / 28V / 48V
- TelemetryRS485 Modbus Protocol
- ProtectionOVP, OCP, OTP, Reverse
Isolated 18–90V to 12V 10A Telecom Module
- Galvanic Isolation1500V DC Break Barrier
- Input Window18–90V Ultra-Wide
- Efficiency94% Peak Synchronous
- Target UsePositive-Ground Telecom
24V to 12V 100A Fleet Bus Step-Down
- Rated Continuous100A Continuous (1200W)
- Input TransientsISO 7637-2 Automotive Safe
- Ripple Noise< 50mVp-p Low Noise
- CoolingIntegrated Heat-Sink Ribs
12V to 48V 20A Industrial Boost Converter
- Current Output20A Sustained (960W)
- Input Voltage10–18V Automotive Range
- PottingPolyurethane Vibration-Proof
- ComplianceCE / RoHS / E-Mark Ready
72V to 24V 20A AGV & Forklift Module
- Battery Input30–90V Wide Battery Pack
- Aux Output24V Fixed Regulated
- Surge ProtectionTV-Diode Transient Clamping
- HousingCorrosion-Proof Anodized
Custom OEM Multi-Channel DC-DC Unit
- Custom Inputs8V up to 120V Tailored
- AlgorithmsLithium / AGM / Sodium-Ion
- Field IntegrationCAN-Bus / LIN / RS485
- SamplingRapid Prototyping (MOQ: 5)
Technical Architecture White Paper
Overcoming Euro 6/6d Smart Alternators in Warsaw’s Transport Corridors
In-depth engineering analysis of battery-to-battery charging dynamics under strict European emissions control and sub-zero Central European temperature fluctuations.
Regenerative Braking Volatility
Modern commercial transport platforms operating throughout the Masovian Voivodeship leverage Euro 6d regenerative smart alternators. During deceleration, system voltage spikes above 15.2V, while coasting drops alternator output to 12.2V. Unregulated passive relays (VSRs) drop connection or violently spike auxiliary LiFePO4 cells. Eltrum’s synchronous buck-boost architecture ensures an ultra-stable three-stage charging profile regardless of alternator swing.
Sub-Zero Warsaw Winters & BMS Logic
Lithium Iron Phosphate cells suffer irreversible lithium plating if charged below 0°C. Our custom units configured for the Polish climate feature integrated NTC temperature compensation and BMS cold-weather handshake circuits. The dual charger throttles charging current or redirects DC power to heating pads before engaging bulk constant-current phases, guaranteeing pack longevity across -25°C conditions.
Galvanic Isolation vs. Ground Faults
In industrial telecommunication sites along the Vistula river and off-grid utility stations, ground loop currents can quickly destroy sensitive PLCs and remote monitoring nodes. Our isolated DC-DC topologies introduce an internal high-frequency planar transformer yielding over 1500V DC breakdown isolation, mitigating floating potential risks and high-frequency switching EMI.
Masovian Use Cases
Mission-Critical Applications Across Central Poland
From international logistics fleets hubbed in Ożarów Mazowiecki to electric maritime craft on the Zegrze Reservoir, our chargers provide rock-solid field power conversion.
Cross-Border Cold Chain Fleets
Warsaw serves as the logistics gateway linking Eastern and Western Europe. Our 24V to 12V 100A buck-boost systems power tail lifts, tracking telematics, and temperature sensor arrays on long-haul transport routes.
Municipal Utility & Emergency
Warsaw municipal service vehicles require continuous DC power for hydraulic actuators, auxiliary lighting, and field diagnostic computers without draining primary cranking battery banks during idling.
Off-Grid Solar Telecom Hubs
Cellular nodes outside Warsaw’s urban core utilize our 48V to 12V isolated dual battery charging converters to buffer solar power fluctuation and provide clean ripple-free DC to microwave backhaul gear.
Electric Marine & Zegrze Leisure
Protected lake nature reserves around Warsaw enforce zero-emission electric propulsion. Our IP67 sealed multi-bank chargers supply high-current charging from dockside AC or onboard auxiliary solar DC circuits.
Industry Evolution 2025–2030
Central European Electrification & Dual-Battery Trends
Poland’s position as Europe's leading battery manufacturing ecosystem is driving localized integration of high-density lithium chemistries. Commercial retrofitting, zero-emission inner-city clean transport zones (Strefy Czystego Transportu in Warsaw), and high energy tariffs require conversion units that maximize every watt. The table below analyzes how Eltrum’s synchronous switching topologies perform against obsolete regional procurement alternatives.
| Evaluation Parameter | Eltrum Synchronous DC-DC Dual Charger | Standard Voltage Sensitive Relay (VSR) | Generic Non-Isolated Buck Module |
|---|---|---|---|
| Euro 6 Smart Alternator Support | Full Buck-Boost operation from 8V–90V input | Incompatible (Drops out when alternator de-energizes) | Fails when alternator voltage sags below auxiliary bank |
| LiFePO4 Chemistry Protection | 3-Stage CC/CV profile with cut-off threshold | High risk of over-current and BMS trip-outs | Constant voltage only; no absorption phase timing |
| Ground Fault Mitigation | Available in 1500V galvanic isolated topologies | Zero isolation (Common ground creates parasitic loops) | Non-isolated common negative connection |
| Sub-Zero Thermal Derating | Integrated sensor throttling with safety interlock | Unmonitored; forces charge regardless of temp | Linear thermal shutoff at extreme heats only |
| Remote System Telemetry | RS485 Modbus / CAN connectivity protocols | None (Purely analog magnetic latching) | Analog trim pot; no real-time data bus |
Shenzhen Eltrum Electronic Co., Ltd.
End-to-End Direct Manufacturing Since 2015
We operate an agile 3,000 m² production complex equipped with high-speed Yamaha SMT placement lines, high-frequency planar transformer winding stations, automated polyurethane vacuum-potting chambers, and individual 100% full-load thermal burn-in test chambers.
By eliminating intermediary trading markups, Warsaw B2B distributors, OEM vehicle converters, and system integrators receive direct-from-factory pricing, customized charging algorithms, white-label packaging, and agile sample fulfillment starting from an accessible MOQ of only 5 units.
ISO 9001:2015 Certified
CE Compliant (LVD/EMC)
RoHS Lead-Free Process
Automated Burn-In Validated
Procurement Clarity
Frequently Asked Questions by Polish Technical Buyers
Key information regarding international logistics, DDP delivery into Poland, voltage tolerances, and custom ODM hardware engineering.
How are import customs, CE documentation, and shipping handled for Warsaw deliveries?
We provide complete shipping flexibility including EXW, FOB Shenzhen, and door-to-door DDP (Delivered Duty Paid) directly to your Warsaw warehouse or logistics facility. All chargers ship with verified CE Declarations of Conformity (EMC & LVD directives) and RoHS compliance documentation required by Polish customs authorities.
Can your DC-DC chargers maintain regulation under severe alternator drop in modern trucks?
Yes. Unlike standard step-down chargers that stop operating when input voltage collapses below the target battery rail, our buck-boost topologies seamlessly transition between step-up and step-down conversion modes. Even if your Euro 6 alternator drops to 10.5V under start-stop traffic conditions, the unit continues delivering a regulated 14.6V or 29.2V charge curve.
What is the minimum order quantity (MOQ) for custom voltage profiles or buyer branding?
For standard off-the-shelf catalog models, our sample evaluation MOQ begins at just 5 units. For customized charging curves (such as specific lithium titanate, sodium-ion, or custom LiFePO4 bulk voltages) or private-label laser-engraved casings, OEM minimum order quantities generally begin at 50 to 100 units.
How do the chargers survive corrosive winter road salt and extreme moisture in Poland?
Our heavy-duty models utilize rugged anodized aluminum extruded enclosures completely filled with industrial-grade polyurethane or silicone resin potting compound. This achieves a true IP67 or IP68 waterproof and dustproof ingress rating, protecting sensitive internal magnetics and power MOSFETs against salt spray, condensation, and mechanical vibration up to 5G.
Can Eltrum units communicate over digital vehicle data networks like RS485 or CAN-bus?
Yes. Models in our WG-12C800M and high-wattage buck-boost lines include optional RS485 communication protocols with open register mapping. This allows system engineers to dynamically adjust charging current, monitor live heatsink temperature, track voltage drops, and program battery chemistry setpoints directly from an onboard vehicle PLC or human-machine interface.
Accelerate Your Power Conversion Capabilities in Warsaw
Partner directly with Shenzhen Eltrum Electronic Co., Ltd. for factory-direct wholesale pricing, robust custom engineering support, and rapid prototyping of dual battery chargers and isolated converters.
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