Smart 36V 13A Waterproof Lithium Battery Charger (DC 12V to 43.8V)
- TopologyBoost CC/CV Profile
- Input Voltage9.5V – 16V DC
- Output Voltage43.8V LiFePO4 / 13A
- ProtectionIP68 Fully Potted
Standard & Custom OEM Solutions
Core DC-DC Converters & Smart Charging Hardware for Fleet Operators
Explore 8 precision-engineered power conversion architectures engineered by Shenzhen Eltrum Electronic. Backed by rigorous CE, RoHS, and ISO 9001 standards, ready for dispatch to commercial fleets, golf resorts, and corporate campuses in Heredia, Costa Rica.
48V to 12V 50A/60A Synchronous Buck Step-Down Regulator
- TopologySynchronous Buck
- Input Range30V – 60V DC Nominal
- Output Current50A – 60A (Up to 720W)
- Efficiency96.2% Peak
Isolated 36V–75V to 12V 10A Noise-Immune DC-DC Module
- Isolation1500V DC Galvanic
- Input Nominal36V / 48V / 60V DC
- Output Spec12V DC / 10A (120W)
- ApplicationGolf Cart CAN-bus/GPS
Universal 30V–90V to 24V 20A High-Capacity Buck Converter
- Input Voltage30V – 90V DC Traction
- Output Rail24V DC / 20A (480W)
- CasingDie-Cast Extruded AL
- Thermal Rating-40°C to +85°C Operating
1500W High-Power RS485 Controlled Buck-Boost Converter
- Input Span10V – 60V Dynamic DC
- Output Regulation12V / 24V / 48V Stable
- TelemetryRS485 Modbus RTU
- Peak Power1500W Continuous
High-Current 24V/36V to 12V 100A Heavy Duty Step-Down Unit
- Output Current100 Amperes Sustained
- Power Ceiling1200 Watts
- Ripple & Noise< 50mVp-p
- ComplianceCE, RoHS Certified
600W IP65 Sealed On-Board LiFePO4 Golf Cart Charger
- Mains Input90V – 264V Universal AC
- Battery Support36V (43.8V) / 48V (58.4V)
- Thermal MethodPassive Convection Sink
- Ingress RatingIP65 Water & Dust Proof
18V–90V Multi-Voltage to 12V 10A All-Weather Accessory Regulator
- Universal Rail24V / 36V / 48V / 72V
- Aux Output12V DC Regulated (10A)
- EncapsulationHigh Heat Epoxy Resin
- Overload CutoffAuto-Recovery Hiccup Mode
500+
Engineered SMPS Models
130+
Global Export Destinations
96.8%
Peak Synchronous Efficiency
ISO9001
Certified Factory QA Controls
Engineering DC-DC Voltage Regulation for Heredia's Topography & Microclimates
The province of Heredia, Costa Rica, represents a demanding proving ground for Light Electric Vehicles (LEVs), utility golf cars, and industrial resort transports. Spanning the high-tech corridors of the Central Valley at elevations exceeding 1,150 meters up to the cloud-forest ridges of Barva and San Rafael de Heredia, operating conditions place extreme stresses on onboard power electronics. In golf carts operating at 36V, 48V, or modern 72V lithium architectures, step-down converters are not auxiliary commodities; they are mission-critical power links that safeguard high-draw accessories—ranging from GPS tracking and digital fleet telemetry to safety beacons, LED illumination, mobile refrigeration, and two-way radio systems.
Operating a low-speed vehicle fleet in Heredia requires mitigating two primary environmental and electrical hazards: persistent atmospheric relative humidity fluctuating between 75% and 95%, and severe regenerative braking back-EMF voltage spikes generated on steep volcanic grades. Shenzhen Eltrum Electronic manufactures CE-certified golf cart DC-DC converters equipped with ultra-wide input margins (such as our 30V–90V continuous operating windows) and military-grade silicone thermal potting. These structural specifications prevent catastrophic MOSFET breakdown when carts negotiate the rolling inclines of country clubs or internal freight corridors inside Heredia's thriving free-trade logistics parks.
Technical Operational Note for Heredia Fleet Managers: In un-isolated DC-DC architectures, sudden regenerative braking surges when descending downhill slopes toward the Virilla River basin can elevate a nominal 48V battery bus to 64V–72V in milliseconds. Generic converters lack active Transient Voltage Suppressors (TVS) and avalanche-rated switching semiconductors, resulting in primary-side short circuits that feed raw battery pack voltages directly into 12V vehicle accessories. Eltrum's golf cart converter series integrates multi-stage clamping diodes, soft-start circuitry, and up to 1500V galvanic isolation to isolate traction pack disturbances completely from sensitive ancillary loads.
Furthermore, Heredia's climate accelerates oxidation across exposed wiring terminals and non-hermetic circuit enclosures. Our manufacturing facility in Shenzhen applies rigorous structural encapsulation techniques: automated vacuum resin degassing, high-grade thermally conductive silicone potting, and corrosion-resistant aluminum housings compliant with IP67 and IP68 standards. This ensures that daily fleet wash-downs, high ambient moisture, and acidic atmospheric volcanic particles around the foothills of Barva Volcano will not compromise the operational lifespan of the converter assembly.
Localized Deployment Scenarios Across Heredia's Industrial & Leisure Hubs
Golf carts and electric utility burden carriers in Heredia have moved far beyond traditional fairways. Today, diverse commercial sectors across the province depend on electrified mobility platforms requiring dependable, high-efficiency DC-DC conversion hardware.
Free Trade Zones (FTZs) & Business Parks
Facilities within América Free Zone (AFZ), Global Park, and UltraPark utilize quiet, zero-emission electric utility vehicles for continuous intra-campus mail dispatch, security surveillance, medical emergency response, and employee shuttle services. High-amperage 48V-to-12V 50A/60A step-down converters ensure that auxiliary communications, sirens, and tablet dispatch docking systems remain fully powered without draining battery sub-banks unevenly.
Championship Golf Clubs & Private Resorts
High-end golf facilities proximate to Heredia, including Club de Golf Cariari and nearby central valley courses, require completely silent, highly efficient step-down power conversion. Eltrum's potted converters operate via passive convection cooling without noisy internal fans that suck in moisture or debris, delivering steady 12V/13.8V power for onboard cooler boxes, GPS fairway mapping displays, and perimeter night-lighting systems.
Coffee Haciendas & Mountain Eco-Agritourism
From coffee tour destinations on the slopes of Barva to mountain lodges in San Rafael de Heredia, ruggedized utility electric carts traverse rough, unpaved agricultural trails. The converters installed in these fleets withstand constant mechanical vibration, shock forces up to 10G, mud exposure, and tropical deluge conditions without experiencing solder fracture or casing failure.
Gated Residential Communities & Condominiums
Upscale residential communities across San Antonio de Belén and Santa Lucía utilize street-legal Low-Speed Vehicles (LSVs) for everyday transport. Our CE-certified DC-DC converters regulate horn systems, DOT-approved turn indicators, hydraulic brake-assist pumps, and stereo units, preventing intermittent electrical drop-outs during vehicle acceleration.
Cold-Chain & Pharmaceutical Internal Shuttles
Within cleanroom medical device and life-science manufacturing clusters in Heredia, specialized electric carts carry onboard mini-refrigeration units. Eltrum's 24V/48V buck-boost stabilizers ensure that sensitive compressor motors receive flat, steady voltage regulation even when the cart battery pack reaches deeply discharged states.
Engineering Comparison: Eltrum Industrial Converters vs. Commodity Market Units
Procurement teams and engineering directors in Costa Rica frequently face failures when purchasing low-cost, unbranded step-down converters through third-party platforms. Below is an engineering benchmark highlighting why Eltrum's CE-certified manufacturing line provides lower Total Cost of Ownership (TCO) and superior Mean Time Between Failures (MTBF) exceeding 50,000 hours.
| Performance Parameter | Eltrum Industrial Golf Cart Converters | Generic Commodity Converters | Operational Impact in Heredia |
|---|---|---|---|
| Operating Input Voltage | 30V – 90V Continuous (100V Surge) | 36V – 52V Narrow Input Limit | Survives 72V spikes during descent |
| Galvanic Isolation | Available 1500V DC Isolation | Non-Isolated Common Ground Only | Protects high-value fleet electronics |
| Ingress Protection | IP67 / IP68 Vacuum Potting | Vented Enclosures / Sheet Metal (IP20) | Withstands 95% humidity and rain |
| Peak Power Efficiency | Up to 96.8% (Synchronous Buck) | 82% – 88% (Linear / Legacy Buck) | Preserves battery range per charge cycle |
| Certifications & QA | CE, RoHS, ISO 9001:2015 Factory Audit | Self-Declared / Non-Compliant | Simplified customs clearance in Costa Rica |
| Transient Clamping Protection | Integrated TVS Diodes & OVP/OCP/OTP | Single Slow-Blow Fuse or None | Prevents catastrophic fire risks |
*Data verified via internal Eltrum Power Laboratory testing against standard 48V to 12V 30A automotive aftermarket converters under controlled environmental chamber conditions (85°C ambient, 85% RH).
Technological Shifts Shaping Heredia's Golf Cart & Utility Fleet Electrification
As Costa Rica advances its comprehensive National Decarbonization Plan (Plan Nacional de Descarbonización), the electrification of commercial utility transport has shifted into high gear across the Greater Metropolitan Area (GAM), including Heredia. Two pivotal technological transitions dictate converter procurement decisions:
1. Accelerated Lithium Iron Phosphate (LiFePO4) Battery Conversions: Legacy deep-cycle lead-acid battery packs (flooded and AGM) are being systematically phased out across golf courses and corporate fleets in Heredia due to high maintenance requirements and short cycle lives. LiFePO4 chemistry presents completely different charging and discharge curves. A 48V lead-acid system experiences rapid voltage drop under heavy load (cranking down to 42V), whereas a 48V (16S) LiFePO4 battery maintains a very flat 51.2V profile until sudden cutoff. However, during rapid regenerative deceleration, lithium BMS units will disconnect if cell over-voltage thresholds are breached. When the BMS disconnects abruptly under load, severe inductive load-dump voltage transients enter the electrical harness. Eltrum's DC-DC converters feature rapid clamping response times (< 25 microseconds), stabilizing auxiliary lines without resetting onboard vehicle controllers.
2. Pervasive Onboard Telematics & Fleet Management: Major logistics operations in corporate campuses such as América Free Zone now require GPS geofencing, operator biometric identification, speed limiting, and live state-of-charge (SoC) reporting on all utility vehicles. These microelectronic systems require pristine, ripple-free 12V and 24V power rails. Standard converters produce high switching ripple (often exceeding 200mVp-p), which introduces electromagnetic interference (EMI) into cellular, RFID, and CAN-bus telemetry circuits. Eltrum's golf cart converter lines undergo strict radiated and conducted emissions testing compliant with CE automotive safety standards, incorporating secondary LC filtering stages to keep output ripple well beneath 30mVp-p.
Heredia B2B Procurement FAQ: Technical, Logistical & Integration Queries
What is the difference between isolated and non-isolated DC-DC converters for golf cart retrofits?
A non-isolated converter shares a common ground (negative return) between the high-voltage traction battery pack (36V, 48V, or 72V) and the low-voltage auxiliary circuitry (12V). While cost-effective and compact, non-isolated models can transmit ground loops and high-voltage spikes into accessories if an insulation fault or motor short-circuit occurs. An isolated converter utilizes a high-frequency internal transformer to separate the primary and secondary grounds physically. We recommend isolated models for vehicles operating advanced telemetry, CAN-bus networks, industrial controllers, or operating in wet environments like Heredia to eliminate phantom electrical faults and electro-corrosion.
Can Eltrum converters handle 72V nominal lithium battery upgrades in Club Car, EZ-GO, or Yamaha carts?
Yes. Modern 72V lithium packs can reach up to 84V–87.6V when fully charged. Standard automotive 48V-to-12V converters will trigger Over-Voltage Protection (OVP) or experience catastrophic transistor breakdown when exposed to voltages above 60V. Eltrum offers specialized wide-input models (e.g., our 30V–90V and 18V–90V series) that effortlessly accommodate 72V nominal packs, including regenerative charging surges up to 100V DC.
How does the tropical humidity and altitude of Heredia (1,150m+) impact converter performance?
At 1,150 to 1,500 meters altitude, atmospheric density decreases slightly, which marginally reduces convective air-cooling efficiency. Combined with ambient humidity reaching 95% in Costa Rica's rainy season, air-cooled or non-sealed units suffer from internal condensation and thermal throttling. Eltrum addresses this by using aluminum heat-sink enclosures with high-conductivity silicone potting (thermal conductivity > 1.5 W/m·K), ensuring that internal heat is quickly transferred to the external casing without relying on failure-prone internal fans.
What Minimum Order Quantity (MOQ) and sample lead times apply for Costa Rican purchasers?
To assist engineering validation and fleet trial testing, our standard MOQ starts from just 5 units for off-the-shelf catalog models. For bespoke OEM/ODM requirements (custom voltage setpoints, specific automotive wire harness lengths, or specialized waterproof Deutsch/Amphenol connectors), typical production MOQs begin at 50 to 100 units. Evaluation samples can be dispatched via air express (DHL/FedEx/UPS) directly to Juan Santamaría International Airport (SJO) within 5–7 business days.
What certifications are provided for Costa Rican commercial import and customs compliance?
All Eltrum power conversion hardware ships with authentic CE Declaration of Conformity certificates, comprehensive EMC/LVD laboratory test reports, and RoHS verification certificates. Our manufacturing facility operates under a fully certified ISO 9001:2015 quality management system. These documents ensure expedited customs clearance at both San José customs posts and maritime ports of entry (Puerto Limón or Puerto Caldera).
How do I size the amperage requirements for my golf cart accessory package?
To size your converter correctly: sum the maximum wattage of all 12V accessories. For example: LED headlights and taillights (~40W), sound bar or audio system (~120W peak), GPS screen (~15W), USB charging ports (~36W), and brake light relays (~25W). Total peak wattage = 236W. At 12V, this represents approximately 19.6 Amperes. As an engineering best practice, apply a 25% continuous safety derating headroom: select a 25A or 30A rated converter (such as our 360W unit) to prevent thermal stress during prolonged twilight fleet operations.
Can your converters be wired directly to the vehicle key switch to prevent idle parasitic battery drain?
Yes. Eltrum converters are available in both 3-wire and 5-wire configurations, as well as models featuring dedicated remote ignition/enable terminals (EN/ACC pin). Connecting the enable line to the vehicle key switch ensures that when the cart is parked and switched off, the converter draws virtually zero idle quiescent current (< 2mA), preserving traction battery charge during weekends or seasonal fleet storage.
What protections are integrated against reverse polarity during maintenance wiring?
Our converters incorporate internal reverse polarity protection via low-loss Schottky bypass networks or MOSFET active protection circuits, combined with an automatic-recovery output short-circuit protection (Hiccup mode). If an installer reverses the input polarity during battery pack maintenance in the fleet depot, the converter will not ignite or blow upstream traces.
Shenzhen Eltrum Electronic Co., Ltd. – Factory Infrastructure & Technical Capabilities
Established in 2015 in the global electronics manufacturing epicenter of Shenzhen, China, Shenzhen Eltrum Electronic Co., Ltd. has grown into a world-class designer and manufacturer of DC-DC converters, isolated power modules, and smart LiFePO4 battery charging hardware. Our production facilities encompass modern automated surface-mount technology (SMT) lines, computerized magnetics winding apparatus, automated vacuum epoxy/silicone potting stations, and digital burn-in test chambers.
We believe high reliability is engineered at the component level. Every converter destined for overseas markets like Costa Rica utilizes high-grade Japanese and Taiwanese electrolytic capacitors rated for 105°C operation, ultra-low RDS(on) trench-gate power MOSFETs, and high-permeability ferrite cores. Prior to packaging, 100% of our products undergo full-load burn-in screening, thermal cycling stress testing, and insulation breakdown checks. With an agile engineering team, we provide comprehensive OEM and ODM support, including custom input/output voltage calibration, specialized chassis dimensions, custom wire-harness terminations, and integrated RS485/CAN-bus digital communication protocols tailored to proprietary fleet management systems.
Ready to Modernize Your Golf Cart & Utility Fleet Power in Heredia?
Contact our engineering support team directly to request detailed technical datasheets, full-line pricing sheets, or custom OEM samples designed for Costa Rica's operational environments.
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