Smart 36V 13A Waterproof LiFePO4 Battery Charger
- TopologyDC-DC Step-Up Boost
- Input VoltageDC 12V (9–18V Range)
- Output RailDC 43.8V @ 13A (570W)
- ProtectionIP67 Fully Potted
500+
Standard Power Topologies
130+
Global Export Territories
ISO9001
CE & RoHS Certified Factory
5 pcs
Low Sample Pilot MOQ
Precision Power Modules
High-Efficiency Bidirectional & LiFePO4 Power Converters
Engineered by Shenzhen Eltrum Electronic Co., Ltd. for fleet electrification, mobile auxiliary systems, and Ohio Valley commercial power stabilization.
1500W Wide-Input Bidirectional Buck-Boost Module
- Input Window10V–60V Ultra-Wide
- Output Rails12V / 24V / 28V / 48V
- Max CurrentUp to 60A Dynamic
- InterfaceIsolated RS485 / Modbus
Galvanic Isolated 18–90V to 12V 10A Converter
- Isolation1500VDC Optocoupler/XFRM
- Input Scope18V–90V Continuous
- Output12.0V ± 1.5% Stabilized
- EnclosureAnodized Aluminum Shell
24V to 12V 100A Synchronous Buck Converter
- Nominal In24V (18–35Vdc Range)
- Output Rail12V @ 100A (1200W Peak)
- Efficiency96.4% Peak Rectification
- ComplianceCE / RoHS / ISO 9001
400W Alternator-Safe DC-DC LiFePO4 Charger
- Input Voltage10–36V Smart Alternator
- Profiles14.6V / 29.2V / 43.8V CC/CV
- ControlIgnition Detect / Low-Cut
- EnclosureIP68 Thermal Encapsulated
600W–1000W IP65 Universal AC-DC Charger
- Grid Input90V–264VAC (Universal US)
- Charge Rails14.6V, 29.2V, 58.4V Options
- PFC Factor>0.98 Active Correction
- CertificationsCE / RoHS Lab Tested
30–90V to 24V 20A Heavy Industrial Buck
- Input Voltage36V / 48V / 60V / 72V Packs
- Output Rail24V @ 20A (480W Stabilized)
- ProtectionOVP / OCP / OTP / Short Auto
- Use CaseElectric Forklifts & Tuggers
12V to 48V 20A Heavy-Duty Step-Up Boost
- Input Voltage10V–20V High Inrush Bus
- Output Rail48V @ 20A (960W Sustained)
- Heat DissipationIntegrated Heat-Sink Fins
- ConversionUp to 95.8% Efficiency
Geographic & Industrial Context
Engineering Power Conversion for Louisville’s Logistic Super-Hub
Strategic analysis of bidirectional charging, energy arbitrage, and localized electrical harshness across the Louisville-Jefferson County metropolitan region and the broader Ohio Valley corridor.
1. The Strategic Position of Louisville, Kentucky in Global Logistics & Manufacturing
Louisville represents an extraordinary node in North American commerce. Anchored by the world’s largest automated package handling hub—the UPS Worldport at Louisville Muhammad Ali International Airport (SDF)—and flanked by major assembly plants such as the Ford Kentucky Truck Plant and Louisville Assembly Plant, Jefferson County commands unprecedented freight volume. With millions of tons traversing through intermodal rail hubs (CSX, Norfolk Southern), river barge terminals on the Ohio River, and the convergence of interstate freight arteries I-64, I-65, and I-71, the demand for continuous, uninterrupted electrification has surged exponentially.
In this high-throughput logistics ecosystem, battery power systems can no longer remain passive, uni-directional storage assets. Material handling automated guided vehicles (AGVs), class 4–8 electric delivery trucks, ground support equipment (GSE), and autonomous warehouse tugs require advanced bidirectional battery chargers and high-amperage DC-DC converters. Bidirectional charging topology allows vehicles to draw peak energy during low-tariff off-peak windows and discharge power back into depot microgrids (V2G/V2B) during local peak strain on the Louisville Gas and Electric (LG&E) grid, driving down utility demand charges while sustaining mission-critical logistics operations.
2. Technical Demands of Local Field Environments: Thermal, Vibration, and Grid Stress
Field installations in Kentucky demand extreme electronic resilience. Louisville experiences harsh humid subtropical weather characterized by sweltering 95°F+ summer heat waves accompanied by high ambient humidity and freezing continental winter cold snaps dropping below 10°F. Electronic power converters and battery chargers mounted under-chassis on commercial delivery vans or deployed in unconditioned Ohio River industrial warehouses face rigorous thermal cycling.
Standard open-frame consumer-grade chargers routinely suffer early component failures in this corridor due to internal condensation, salt-treated roadway corrosion, and mechanical stress from high-vibration heavy truck suspensions. Shenzhen Eltrum Electronic addresses these operational hurdles by designing our bidirectional and buck-boost modules with complete industrial polyurethane potting (IP65 to IP68 rating), aviation-grade die-cast aluminum heat-dissipation chassis, and wide operating temperature thresholds spanning -40°C to +85°C. Furthermore, with integrated galvanic isolation up to 1500VDC, our converters insulate sensitive CAN/RS485 sensor buses from destructive inductive voltage spikes caused by massive industrial induction motors and dock cranes operating across the Louisville industrial zone.
Air Freight GSE & Intralogistics AGVs
Serving autonomous tugs, scissor loaders, and automated sorting AGVs around the SDF airport corridor. Bi-directional buck-boost converters regulate battery-to-battery charging while allowing regenerative energy capture during repetitive brake-and-steer cycles.
24V to 48V Boost
Regenerative Braking
Zero Inrush Drop
Commercial Fleet Auxiliary Dual-Batteries
Heavy commercial delivery trucks navigating I-65 and I-71 routes require stabilized CC/CV profiles to charge secondary LiFePO4 house banks from smart alternators without tripping truck ECU sensors or scorching alternator stators.
Smart Alternator CC/CV
Ignition Sensing
14.6V / 29.2V Fixed
Depot Peak Shaving & Mobile Microgrids
Decarbonized distribution centers leverage bidirectional battery systems to discharge stored energy into warehouse automation during regional peak demand charges, slashing commercial electric bills under LG&E commercial tariff rates.
Bidirectional DC-DC
V2B Peak Shaving
RS485 Telemetry
Market Evolution
Emerging Trends & Compliance Driving Louisville Energy Procurement
A comprehensive roadmap of regulatory compliance, federal funding incentives, and technical shifts across the Kentucky EV supply ecosystem.
| Architecture Parameter | Conventional Uni-Directional Charger | Eltrum Bidirectional DC-DC Topology | Operational Impact for Louisville Fleets |
|---|---|---|---|
| Power Flow Flexibility | Simplex Grid/Alternator to Pack | Full Duplex (Charge & Invert Discharge) | Enables V2B / V2G peak load mitigation during SDF peak hours. |
| BMS Communication | Basic Analog Thresholds / None | Active RS485 / CAN Bus Telemetry | Real-time synchronization with LiFePO4 cells to prevent premature cell aging. |
| Voltage Translation Range | Narrow ±10% Fixed Ratios | Dynamic Buck-Boost (10V to 60V / 18V to 90V) | Absorbs heavy diesel engine cranking brownouts without resetting telemetry. |
| Thermal & Moisture Sealing | Perforated Fan-Cooled Casing | Hermetic Epoxy/Polyurethane Resin (IP67/68) | Impervious to road de-icing salts, mud, and intense Ohio River humidity. |
| Conversion Efficiency | 84% – 88% Average | 94.5% – 96.8% Synchronous Rectification | Minimizes internal thermal losses in enclosed battery compartments. |
Navigating NEVI, IRA Section 30C, and Kentucky Electric Corridors
The State of Kentucky is witnessing massive infrastructure capital infusion through the National Electric Vehicle Infrastructure (NEVI) formula program, allocating over $69 million along key alternative fuel corridors including I-65 and I-75. Simultaneously, federal Inflation Reduction Act (IRA) provisions—notably Section 30C Alternative Fuel Vehicle Refueling Property Credit—provide commercial fleet depots in qualified census tracts up to 30% in capital expenditure deductions for bidirectional charging infrastructure.
Procurement teams in Louisville must balance these funding criteria with rigorous equipment safety protocols. While grid-tied systems must conform to UL 1741-SA / SB and IEEE 1547 standards, secondary battery converters and industrial DC subsystems require ISO 9001 certified manufacturing, CE compliance, RoHS material safety, and UL 94-V0 flammability ratings. Shenzhen Eltrum Electronic supports OEM engineering integrators with complete documentation packages, schematics verification, and custom-tuned firmware to accelerate NRTL field certifications.
Direct Manufacturer Authority
Engineered in Shenzhen, Tested for Demanding Global OEM Applications
Founded in 2015, Shenzhen Eltrum Electronic Co., Ltd. has grown to become a benchmark manufacturer of advanced DC-DC converters, isolated power modules, and intelligent LiFePO4 battery charging platforms. Located in the heart of China’s electronics manufacturing center in Hangcheng, Shenzhen, our 3,000 m² factory operates under strict ISO 9001 certified quality control systems.
Our foundational engineering legacy began in transformer-isolated DC-DC architectures—a heritage of noise suppression, magnetic optimization, and high dielectric protection that directly informs our bidirectional battery charging topologies. From high-frequency planar transformer winding to vacuum epoxy potting and 100% full-load thermal burn-in testing, our production line eliminates the risk of field breakdowns.
CE & RoHS Certified
ISO 9001 Quality
OEM/ODM Buyer Label
MOQ from 5 Units
Procurement Intelligence
Frequently Asked Questions: Technical & Shipping FAQ
Addressing engineering parameters, customs clearance, transit times, and warranty support for procurement managers in Louisville and the Mid-South region.
How does a bidirectional charger differ from a standard DC-DC buck-boost converter?
A conventional buck-boost converter operates unidirectionally: power flows strictly from the input rail to the output rail with fixed polarization. A bidirectional charger utilizes dual-quadrant or four-quadrant active H-bridge switching topologies driven by DSP microcontrollers. It allows current to seamlessly reverse directions based on software command or voltage thresholds. In Louisville fleet applications, this means the same power unit charges auxiliary 24V/48V LiFePO4 battery banks from vehicle main traction or alternator systems, and reverses to feed energy back into the cabin or vehicle auxiliary systems when the primary power source is disengaged.
What are the typical sea freight and air express transit lead times to Louisville, KY?
For rapid sample validation and pilot batch deployments, air express via UPS Worldwide Saver or FedEx directly from Shenzhen to Louisville Muhammad Ali International Airport (SDF) typically takes 3 to 5 business days. For volume container shipments, ocean freight is routed through US West Coast ports (Los Angeles/Long Beach) or East Coast ports (Savannah/Norfolk) connected via inland rail directly to Louisville intermodal ramps, averaging 22 to 32 days total door-to-door transit time. We provide full DDP (Delivered Duty Paid), CIF, or FOB terms with automated tracking.
Can Eltrum customize the charging algorithm for specialized low-temperature LiFePO4 batteries?
Yes. Lithium Iron Phosphate (LiFePO4) chemistry cannot safely accept high-current charge currents below 0°C (32°F) without risking metallic lithium plating and permanent capacity degradation. Because Louisville regularly experiences freezing winter temperatures, our engineering team can integrate custom pre-heating logic, low-temperature charge termination sensors, and customized multi-stage CC/CV charging curves. We can program custom parameters via firmware before factory sealing or provide RS485 communication protocols allowing your system BMS to manage charge current dynamically.
What is your policy regarding Minimum Order Quantities (MOQ) and buyer-label OEM customization?
To assist American engineering teams during prototyping and trial validation phases, standard catalog models have an accessible sample MOQ starting at just 5 units. For customized OEM builds—such as bespoke input/output voltages (e.g., 36V to 13.8V, 72V to 48V), custom heat-sink enclosures, proprietary harness connectors (Deutsch, Anderson Powerpole), and buyer branding/labels—our custom production threshold generally starts at 50 to 100 units depending on mechanical tooling requirements.
How do Eltrum chargers protect against severe alternator voltage spikes and field cranking drops?
Automotive and commercial delivery vehicles experience intense electrical disturbances: alternator load dumps can momentarily spike voltages above 60V–100V, while cold-cranking can cause battery voltage to collapse below 8V. Eltrum chargers integrate transient voltage suppressor (TVS) arrays, high-frequency LC filtering, and ultra-fast active over-voltage clamping circuitry. Our wide-input buck-boost models dynamically track input swings from 8V up to 40V, holding a laser-steady 13.8V, 14.6V, or 28V rail to protect downstream electronics from resets or damage.
What certifications and quality documentation accompany export shipments to the United States?
All Eltrum converters and chargers are manufactured in accordance with strict ISO 9001 quality management guidelines. Standard units carry CE certification under electromagnetic compatibility directives (EN 55032 / EN 55035) and RoHS hazardous material compliance. For OEM customers pursuing North American field certification (UL 458 for power converters, UL 1741, or UL 1973), we provide complete schematic topologies, bill of materials (BOM), dielectric test data, and thermal dissipation logs to streamline testing at your chosen NRTL lab.