Smart 36V Lithium Battery Charger DC 12V to 43.8V 13A
- Input Voltage:10–18V DC
- Output Voltage:43.8V DC (CC/CV)
- Rated Current:13A Constant
- Enclosure:IP67 Waterproof
Precision Hardware Portfolio
Industrial & Marine DC-DC Converter Solutions
Engineered for extreme operating environments in Nha Trang and Southern Central Vietnam. From high-surge trolling motors and automated fishing craft to hospitality resort golf buggies, our conversion systems provide clean, unyielding DC rails.
12V DC-DC 400W Waterproof Battery-to-Battery Charger
- Input Profile:10–36V DC Alternator
- Output Curves:14.6V / 29.2V LiFePO4
- Rated Current:25A Multistage
- Cooling:Die-Cast Conduction
1500W Dynamic Buck-Boost Voltage Stabilizer (RS485)
- Input Range:10–60V Ultra-Wide
- Output Rail:12V / 24V / 48V Adj.
- Telemetry:RS485 Modbus RTU
- Peak Efficiency:96.8% Synchronous
24V to 12V 100A Heavy-Duty Buck Step-Down Module
- Input Voltage:18–35V DC Nominal
- Regulated Output:12V / 13.8V DC
- Max Amperage:100A Continuous
- Protection:OCP, OVP, OTP, Reverse
18–90V Wide-Input to 12V 10A Galvanically Isolated Converter
- Isolation Rating:1500V DC Galvanic
- Input Scope:18–90V (24/48/72V)
- Output Rail:12V @ 10A Potted
- Application:Ground Loop Elimination
30–90V to 24V 20A High-Voltage Step-Down Regulator
- Traction Range:36V / 48V / 72V Pack
- Auxiliary Output:24V @ 20A (480W)
- No-Load Loss:< 15mA Standby
- Ingress Rating:Epoxy Resin IP68
12V to 48V 20A Synchronous Step-Up Boost Converter
- Input Battery:10–16V DC Low Rail
- Stepped Output:48V DC ± 1%
- Continuous Power:960W Heavy Duty
- Thermal Design:Ribbed Aluminum Chassis
8–40V to 13.8V 30A Radio & Navigational Stabilizer
- Input Tolerance:8–40V Cranking Fluctuations
- Output Bus:13.8V Comm Standard
- Max Amperage:30A (414W Total)
- Noise Floor:< 30mV RMS Ripple
Regional Field Engineering
Mission-Critical Deployment Scenarios in Nha Trang
Operating hardware in Nha Trang requires specialized resilience against high tropical humidity, intense saline atmosphere, and mechanical vibration across coastal transport and processing corridors.
Maritime Fleet Electrification & Trawlers
Hon Tre and Hon Mun fishing operators and island transit ferries are transitioning from loud lead-acid banks to LiFePO4 chemistry. Our IP68 vacuum-potted DC-DC battery chargers step up variable alternator output (12V/24V) to regulated 43.8V and 58.4V pack voltages, ensuring continuous operation of AIS, sonar equipment, and electric bilge systems without burning alternator windings.
Offshore Aquaculture & Van Phong Smart Cages
Modern lobster and marine aquaculture farms across Van Phong Bay utilize autonomous solar-hybrid feeding barges and environmental monitoring platforms. Our isolated DC-DC converters eliminate nasty ground loops caused by seawater immersion, converting fluctuating 48V DC photovoltaic and battery storage bus bars down to precision 12V and 24V power for telemetry and oxygen sensor probes.
Resort E-Mobility & Vinpearl Utility Buggies
Tourism infrastructure throughout Nha Trang, Cam Ranh, and Bai Dai operates extensive fleets of electric golf carts, shuttle vans, and luggage tractors. Eltrum's 48V–96V to 12V/24V high-current step-down converters power secondary systems—such as high-intensity LED illumination, telematics, and thermal drink coolers—directly from primary traction batteries with >95% power efficiency.
Strategic Market Horizon
Industrial Electrification Trends Across Khanh Hoa
Analysis of power electronics procurement requirements shaped by Vietnam’s National Power Development Plan VIII (PDP8), industrial automation in Suoi Dau, and coastal tourism decarbonization mandates.
01
Green Harbor Mandates & Port Electrification
Nha Trang Port and maritime authorities are tightening rules regarding auxiliary diesel engine idle emissions inside tourist bays. Commercial vessels, recreational catamaran day-cruisers, and port derrick cranes are standardizing on 48V and 96V central battery banks. This drives demand for high-wattage buck-boost converters capable of keeping onboard lighting, hydraulic valving, and navigational computing online without dropouts during heavy electric thruster load shifts.
02
Deep-Cycled LiFePO4 Retrofits in Aquaculture
Marine hatcheries and aquaculture operations across Cam Ranh are discarding lead-acid batteries due to short lifespans caused by chronic high-heat sulfation. As local operators deploy lithium iron phosphate chemistries, standard unregulated step-down regulators are causing BMS shutdowns. The market is shifting decisively to buck-boost and CC/CV step-down converters with customized charging termination cutoffs designed specifically for 3.2V cell configurations.
03
Industrial Automation in Suoi Dau & Ninh Thuy
The manufacturing hubs of Suoi Dau Industrial Zone and Van Phong Economic Zone are adopting Automated Guided Vehicles (AGVs), automated seafood cold chain sortation, and computerized food processing lines. These setups demand DIN-rail and chassis-mount isolated DC-DC modules to isolate high-frequency noise from VFD motor drives and eliminate ground offsets across expansive warehouse networks.
Engineering Matrix
Standard Production Topologies Comparison
Selecting the appropriate power architecture ensures total system efficiency and prevents field returns in coastal applications.
| Converter Architecture | Input Voltage Scope | Regulated Output Options | Typical Efficiency | Isolation Level | Ideal Nha Trang Sector |
|---|---|---|---|---|---|
| Buck (Step-Down) | 24V, 36V, 48V, 72V, 96V Nominal | 5V, 12V, 13.8V, 24V DC | 94% – 97% | Non-Isolated (Common GND) | Resort EV Carts, LED Signage, Truck Bus Systems |
| Boost (Step-Up) | 10–16V (12V) / 20–30V (24V) | 24V, 36V, 48V, 58.4V DC | 93% – 96% | Non-Isolated Boost Circuit | Trolling Motors, Catamaran Winches, High-Bay DC Light |
| Buck-Boost | 8–40V / 10–60V Dynamic | 12V, 13.8V, 19V, 24V, 28V | 91% – 95% | Non-Isolated Automatic | Marine Alternator Sag Stabilization, Solar Hybrid Floats |
| Galvanic Isolated | 18–36V / 36–75V / 18–90V | 5V, 12V, 24V Regulated | 88% – 92% | 1500V DC Galvanic Transformer | Aquaculture Sensor Telemetry, Telecom Repeaters, AGVs |
Direct Factory Supremacy
Why OEM Buyers & Integrators Choose Eltrum
Shenzhen Eltrum Electronic Co., Ltd. has specialized in cutting-edge switch-mode power topologies since 2015. With full ISO 9001:2015 certification and an export footprint spanning over 130 countries, we eliminate middlemen markups and engineering miscommunication.
Hermetic Potting & Salt Defense
Tropical salt-spray in Nha Trang destroys bare PCB assemblies rapidly. Our converter modules utilize military-grade thermally conductive epoxy vacuum impregnation. This achieves true IP68 ingress sealing, preventing component corrosion, salt crystallization, and breakdown under prolonged offshore conditions.
500+ Qualified Standard Topologies
Our mature design database spans buck, boost, automatic buck-boost, and high-voltage isolated topologies from 5V up to 90V DC. We supply over 500 standard production designs, allowing procurement engineers to quickly deploy field-tested power supplies without enduring long prototyping lead times.
Agile OEM/ODM & Buyer-Labeling
We modify input windows, fine-tune output float voltages for proprietary LiFePO4 BMS systems, integrate RS485 communication protocols, and tailor wiring harnesses with Deutsch, Anderson, or Amphenol waterproof connectors. Private branding and low sample MOQs (from 5 pcs) empower your go-to-market speed.
Rigorous Quality: ISO 9001, CE, RoHS
Every single power unit coming off our Shenzhen line undergoes 100% automated full-load burn-in screening, thermal imaging inspection, and high-voltage dielectric withstand verification before packaging. This ensures flawless out-of-the-box reliability for critical applications.
Direct Answers for Engineers
Nha Trang Procurement & Engineering FAQ
Common questions asked by Vietnamese systems integrators, marine vessel upfitters, and industrial equipment builders.
How do Eltrum DC-DC converters survive high humidity and salt mist along Khanh Hoa's coastline?
Coastal environments like Nha Trang cause rapid electrolytic corrosion in non-sealed power modules. All Eltrum marine-line converters feature solid CNC or die-cast aluminum heat sinks filled completely with flame-retardant (UL94-V0) thermally conductive silicone or epoxy resin. This leaves zero internal air pockets, achieving an airtight IP68 rating that permanently blocks salty humidity, fuel vapor, condensation, and water immersion while maintaining optimal thermal dissipation through the chassis.
What is the difference between a buck-boost converter and a standard buck step-down converter?
A buck converter can only step down voltage—it fails or drops out if the input voltage falls below the desired output voltage. In automotive and marine vessels operating in Vietnam, a "12V" lead-acid or LiFePO4 battery drops to 9.5V during starter motor cranking and climbs to 14.6V under active alternator charging. A buck-boost converter features an intelligent 4-switch H-bridge topology that dynamically steps down or steps up, holding a precise, unvarying 12.0V or 13.8V rail across the entire voltage swing.
Why is galvanic isolation necessary for aquaculture telemetry and electric boat navigation?
In seawater applications around Nha Trang Bay, stray DC currents from common-ground systems accelerate galvanic hull and motor bracket corrosion, while introducing severe electrical noise into sensitive depth sounders, VHF radios, and water-quality sensors. Eltrum's isolated DC-DC converters feature an integrated high-frequency transformer barrier that completely separates input positive/negative from output positive/negative, breaking ground loops, preventing galvanic electrolysis, and shielding sensitive electronics from traction drive noise.
Can Eltrum customize charge termination voltages for local LiFePO4 lithium battery builds?
Yes. Standard lead-acid chargers will damage lithium packs or trigger the internal Battery Management System (BMS) into latch-off mode. We routinely manufacture DC-DC chargers and converters with custom CC/CV curves calibrated to your battery configuration: 14.6V for 4S LiFePO4, 29.2V for 8S, 43.8V for 12S, or 58.4V for 16S packs. Custom current limitations, float cutoffs, and RS485 digital telemetry readouts are fully supported via our OEM program.
What are the minimum order quantities (MOQ) and shipping timelines to Nha Trang / Khanh Hoa?
For standard converter catalog models, our sample evaluation MOQ starts at just 5 units, allowing local system integrators to complete field testing before issuing commercial purchase orders. Air express delivery (DHL, FedEx, SF Express) from our Shenzhen facility directly to Nha Trang or Cam Ranh takes approximately 3 to 5 business days. For volume container shipments, we support FOB Shenzhen or CIF Haiphong / Ho Chi Minh City / Da Nang ports with complete export documentation, including CE, RoHS, and Certificates of Origin (Form E).
What payment terms and after-sales warranty are provided to Vietnamese enterprise buyers?
We accept international telegraphic transfer (T/T), PayPal for sample orders, and secure Escrow. All Eltrum DC-DC converters and intelligent LiFePO4 chargers are covered by a comprehensive 12-to-24-month factory replacement warranty against manufacturing defects, supported directly by our dedicated engineering team via email, WhatsApp, and remote technical diagnostics.
Accelerate Your Power Integration Project
Whether you are designing electric passenger ferries for Nha Trang Bay, high-reliability aquaculture monitoring nodes, or resort utility vehicles, our Shenzhen factory engineers stand ready to assist.