Smart 36V Lithium Battery Charger DC 12V to 43.8V 13A Waterproof Charger
- Topology: DC-DC Boost CC/CV
- Input Voltage: 10V – 36V DC
- Target Output: 43.8V @ 13A (570W)
- Ingress Rating: IP68 Sealed Potting
500+
Standard Off-the-Shelf Power Models
130+
Global Destination Export Countries
96.8%
Peak Synchronous Conversion Efficiency
5pcs
Flexible Prototype Verification MOQ
Enterprise Product Portfolio
Featured Industrial Waterproof Power Solutions
Strictly engineered with vacuum silicone potting, die-cast aluminum thermal heat dissipation fins, and comprehensive short-circuit, over-current, and over-voltage safeguards.
1500W Waterproof Buck-Boost Converter with RS485 Bus
- Topology: Non-Isolated Buck-Boost
- Input Voltage: 10V – 60V Wide Range
- Output Voltage: 12V / 24V / 28V / 48V
- Features: Modbus Protocol Telemetry
600W On-Board IP65 AC-DC LiFePO4 Fleet Battery Charger
- Topology: Resonant LLC Converter
- Input Voltage: 90V – 264V AC Universal
- Output Chemistry: 14.6V to 58.4V LiFePO4
- Efficiency: >94% Peak Thermal
24V to 12V 100A Heavy Vehicle Step-Down DC Regulator
- Topology: Synchronous Step-Down Buck
- Input Voltage: 18V – 35V DC Fleet Bus
- Current Output: 12V DC Continuous 100A
- Application: Commercial Trucks & Buses
Galvanic Isolated 18V–90V to 12V 10A Industrial Converter
- Isolation: 1500V DC Galvanic Barrier
- Input Window: 18V – 90V Ultra-Wide DC
- Output Rail: 12V @ 10A Stabilized
- Protection: Ground-Loop Interruption
12V to 48V 20A (960W) Waterproof Step-Up Boost Module
- Topology: Multi-Phase Boost Regulator
- Input Window: 9V – 20V DC Starter Battery
- Output Power: 48V DC Regulated (20A Max)
- Protection: Low-Input Cutoff Safeguard
400W Battery-to-Battery Smart DC Charger for RV & Overland
- Charging Stages: 3-Stage Smart CC / CV / Float
- Alternator Safe: Euro 6 / Smart Alternator Ready
- Ingress Rating: IP67 Fully Waterproof
- Application: House Aux Lithium Pack
300W IP66 Marine Lithium Charger with Multi-Regional Plugs
- AC Config: US / EU / UK / AU Mains Plug
- Output Curve: 14.6V / 29.2V Preset Options
- Corrosion Proof: Anodized Anti-Salt Enclosure
- Thermal Mgmt: Fanless Natural Convection
Industry Whitepaper Analysis
Future Procurement & Technological Trends in Waterproof Power Systems
As global electrification penetrates commercial mobility, maritime logistics, and outdoor battery energy storage systems (BESS), procurement managers must adapt to structural changes in solid-state topologies, ingress standards, and lifecycle testing.
1. Transition to GaN/SiC Wide Bandgap Semiconductors
Legacy silicon MOSFET architectures in waterproof converters suffer from high switching losses, demanding bulky aluminum extrusions to bleed excess heat. The industry procurement pivot is shifting toward Gallium Nitride (GaN) and Silicon Carbide (SiC). Switching frequencies higher than 250 kHz allow our engineering teams to reduce passive magnetic volume by 45%, driving specific power densities beyond 18W/in³ while reaching over 96.8% conversion efficiency.
Procurement takeaway: Higher efficiency translates directly to reduced thermal potting volume, lowering shipping weights by 30% for intercontinental exports.
2. Ingress Shift from Splash Protection to Dynamic Submersion
Standard IP65 enclosure designs relying purely on perimeter rubber O-rings are failing accelerated thermal stress tests in marine and mining environments. Diurnal temperature fluctuations generate internal negative pressure vacuums, sucking moisture past rubber seals. Future procurement mandates IP67 and IP68 vacuum-degassed epoxy or polyurethane potting. Complete potting eliminates internal air voids, insulating delicate traces from corrosive saline condensation and handling up to 10G harmonic vibrations.
Procurement takeaway: Insist on vacuum-potting documentation rather than surface spray conformal coatings to eliminate warranty claims caused by micro-cavitation.
3. Bidirectional Power Flow & Smart Digital Bus Telemetry
Modern DC microgrids, autonomous guided vehicles (AGVs), and dual-battery vehicle platforms require intelligent energy redirection. The historical boundary separating DC-DC buck stabilizers from standalone chargers has blurred. Modern procurement specifications demand RS485 / CAN bus Modbus interfaces where system PLCs or Lithium Battery Management Systems (BMS) dynamically program absorption voltage, float cutoff, and current limits over serial data lines in real time.
Procurement takeaway: Modular firmware adaptability reduces SKU counts—a single programmable DC-DC unit serves 12V, 24V, and 36V battery chemistries.
| Converter Topology | Input Range (DC) | Regulated Outputs | Peak Efficiency | Isolation Barrier | Optimal Deployment Scenarios |
|---|---|---|---|---|---|
| Buck (Step-Down) | 18V – 90V DC | 5V, 12V, 13.8V, 24V | 95.5% – 97.2% | Common Ground | Fleet trucks (24V→12V), mining dumpers, golf carts, e-scooter auxiliaries |
| Boost (Step-Up) | 9V – 32V DC | 24V, 36V, 48V, 58.4V | 93.8% – 96.0% | Common Ground | 12V battery stepping up to drive 48V marine trolling motors and LED lightbars |
| Buck-Boost Auto | 8V – 60V Continuous | 12.0V, 13.8V, 28.0V | 92.5% – 95.0% | Non-Isolated | Alternator cranking sag stabilization, off-grid unstable solar DC buses |
| Galvanic Isolated | 18V – 36V / 36V – 75V | 5V, 12V, 24V Regulated | 89.0% – 93.0% | 1500V DC Min | Telecommunications, positive-ground forklifts, medical electronics, noise filtering |
Enterprise Reliability & Manufacturing Credibility
Engineered in Shenzhen, Powering Systems Across 130+ Countries
Founded in 2015, Shenzhen Eltrum Electronic Co., Ltd. has grown into an international powerhouse in high-reliability power conversion electronics. Operating from our specialized industrial facility in Sanwei Community, Hangcheng Street, Shenzhen, we control every critical phase of manufacturing: high-speed SMT placement, automated winding of toroidal magnetics, vacuum potting, and 100% full-load dynamic burn-in testing.
Unlike trading entities, our onsite-verified factory is certified under ISO 9001 quality management guidelines. Our engineers specialize in high-density DC-DC topologies, wide-input battery charging algorithms, and military-grade waterproofing that adheres to strict CE and RoHS environmental safety mandates.
100% Thermal Burn-In
Every module undergoes elevated temperature load cycling before packaging.
Precision Customization
Custom input ranges, custom voltage/current curves, and tailored buyer labeling.
ISO 9001 Certified
Complete traceability on raw active components and passive magnetic cores.
Direct Factory Engineering
Real-time bilingual support from senior power electronics development engineers.
Shenzhen Manufacturing Facility
Surface Mount Assembly
100% QC Bench Testing
Procurement Knowledge Base
Frequently Asked Questions by Industrial Sourcing Teams
Direct technical and commercial answers addressing topology selection, custom potting parameters, order logistics, and certification validity.
What is the standard Minimum Order Quantity (MOQ) and sample lead time?
To support design engineers in bench validation and pilot prototyping, our standard catalog models require an MOQ of just 5 units. High-power units (1000W–1500W) can be sampled starting from 1–2 pieces. Standard samples ship within 3–5 working days from our Shenzhen warehouse, while custom modified-voltage units require approximately 12–15 days for PCB reconfiguration and potting cure.
How do we choose between a standard Buck regulator and a Buck-Boost module?
Choose a standard Buck converter only if your lowest battery discharge voltage remains consistently higher than your desired output voltage by at least 2V–3V of headroom (e.g., a 24V nominal fleet battery running between 20.4V and 29.2V driving a 12V output). If your input voltage crosses over the target output—such as a 12V lead-acid battery dropping to 9.5V during starter motor crank and surging to 14.6V under alternator charging—a Buck-Boost stabilizer is mandatory to prevent brownouts.
Why is Galvanic Isolation necessary in industrial vehicles and telecom racks?
Non-isolated converters share a common negative ground bus between input and output. In high-power telecommunications (typically -48V rails), positive-ground forklifts, or large industrial robotics, shared ground loops generate electromagnetic ground currents, high-frequency digital noise spikes, and catastrophic short-circuit hazards if external wiring touches chassis ground. Galvanic isolation inserts a high-frequency magnetic transformer barrier, eliminating ground loops and isolating electrical faults.
Can your DC-DC chargers be connected directly to Smart Alternators (Euro 6)?
Yes. Modern Euro 6 and Euro 7 commercial vehicles feature smart variable-voltage alternators that intentionally drop voltage below 12.4V during vehicle coasting to reduce emissions. Connecting a secondary LiFePO4 battery directly to this line results in insufficient charging or severe alternator overload. Our smart DC-DC chargers feature integrated ignition detection sensing wiring and programmable low-voltage cutoffs, ensuring steady CC/CV charging without damaging the primary starter battery.
What international export certifications and compliance documents are provided?
All our production models comply with European Union CE EMC directives (EN 55032, EN 55035) and RoHS 2.0 restrictions regarding hazardous substances. For our global OEM clientele, complete declaration documents, test reports, and factory inspection certificates under our ISO 9001 quality audit framework are readily available upon project quotation.
What OEM/ODM customization services are available for custom enclosures?
We offer comprehensive private labeling and full ODM hardware adaptation. Capabilities include custom multi-voltage taps, Anderson Powerpole or Deutsch DT04 connector integration, specialized anodized enclosure coloring, buyer laser engraving, custom RS485 communication protocols, and tailored multi-stage CC/CV charging curves aligned to specific proprietary LiFePO4, NMC, or LTO cell specifications.
Accelerate Your Power Conversion Development Today
Download our complete industrial product catalog containing detailed electrical datasheets, mechanical CAD dimensional drawings, derating curves, and volume tier pricing. Connect directly with our Shenzhen power engineering team for prompt OEM support.