ISO 9001 Factory · CE & RoHS Compliant DC-DC Power · OEM / ODM Welcome

English USD [email protected]
Baja California Industrial Power Solutions

Custom OEM Lithium Battery Charger Manufacturers & Factory serving Tijuana

Direct Factory-Engineered DC-DC & AC-DC LiFePO4 Chargers, Buck-Boost Converters, and Multi-Stage Charging Systems Optimized for Tijuana's Advanced Electronics and Medical Device Maquiladoras.

Tier-1 OEM Battery Charging Modules

Standard & Custom LiFePO4 / NMC Charging Solutions

Factory-direct industrial chargers engineered for extreme thermal endurance, fully potted IP65/IP67 ingress resilience, high-power DC-DC dual-battery topologies, and native RS485 communication protocols.

FLAGSHIP
Smart 36V Lithium Battery Charger DC 12 Volt to DC 43.8 Volt Waterproof Chargers 13A for EV Car RVs Electric Bike

Smart 36V 13A Lithium Battery Charger (DC 12V to 43.8V)

  • TopologyBoost DC-DC Charger
  • Input Voltage10–16V DC
  • Charge Cutoff43.8V (LiFePO4 CC/CV)
  • HousingFully Potted IP65/IP67
HIGH POWER
600W Waterproof AC-DC LiFePO4 Battery Charger

600W AC-DC Waterproof LiFePO4 Charger

  • Input90–264V AC Universal
  • Output Range14.6V / 29.2V / 58.4V
  • Efficiency≥ 93.5% Continuous
  • CoolingFanless Aluminum Chassis
DUAL SYSTEM
400W DC-DC Battery Charger 10-36V Input

400W DC-DC Dual-Battery Charger Module

  • Input Profile10–36V DC Alternator/Solar
  • Target Chem12V/24V LiFePO4 / Lead-Acid
  • Charging StagesBulk, Absorption, Float
  • Ingress RatingIP68 Submersible Design
RS485 COMM
1500W High Power Buck-Boost Converter 10-60V

1500W Buck-Boost Converter with RS485

  • Input Range10–60V DC Wide Range
  • Output Rails12V / 24V / 28V / 48V Regulated
  • Digital ControlProgrammable Bus Monitoring
  • ProtectionOVP, OCP, OTP, Reverse Polarity
GALVANIC ISO
Isolated 18-90V to 12V 10A Waterproof DC-DC Converter

18–90V to 12V 10A Isolated Converter

  • Isolation Barrier1500V DC Ground Decoupling
  • Input Handling18–90V Wide Industrial Swing
  • Output Stability12V DC ±1% Load Regulation
  • ApplicationsTelecom, AGVs, Medical Systems
FLEET HEAVY
24V to 12V 85A 100A DC-DC Step Down Buck Converter

24V to 12V 100A High-Current Buck Unit

  • TopologySynchronous Step-Down
  • Continuous AmpsUp to 100A Rated Output
  • Thermal Threshold-40°C to +85°C Operating
  • Fleet UseCommercial Logistics & Forklifts
STEP-UP
DC 12V Step up to 48V Boost Converter

12V to 48V 20A Waterproof Boost Unit

  • Input Swing10–20V Low-Voltage Bus
  • Output Delivery48V DC High-Torque Power
  • Peak Efficiency> 94% Conversion Rate
  • Sealing StandardResin Potted IP67 Chassis
CUSTOM OEM
Custom Multivoltage Battery Charger Engineering

Custom Multi-Stage OEM Charger Platform

  • Chemistry ProfileLiFePO4, LTO, NMC Custom BMS
  • ConfigurabilityCustom Voltages, Connectors, CAN
  • CertificationsCE, RoHS, Built to ISO 9001
  • Sample TurnaroundRapid Prototyping from 5 pcs
Nearshore Operational Context

Localized Application Scenarios in the Tijuana Maquiladora Hub

Tijuana represents Latin America's largest manufacturing powerhouse, anchoring the CaliBaja Bi-National Mega-Region. Our OEM chargers and power conversion modules are specifically tailored to satisfy rigorous cross-border production criteria.

Medical Device Manufacturing (Parque Industrial El Florido)

Tijuana exports millions of Class I, II, and III medical systems annually to the United States. Mobile crash carts, portable surgical diagnostic systems, and motorized cleanroom transport require medical-grade battery management. Eltrum's isolated DC-DC converters and waterproof AC-DC LiFePO4 chargers provide exceptionally low ripple voltage (≤50mV), strict ground isolation exceeding 1500V, and verified CE/RoHS compliance to prevent electromagnetic interference with sensitive patient monitors.

Automated Guided Vehicles (AGVs) & Otay Mesa Logistics

The high-throughput logistics hubs bordering Otay Mesa and Mesa de Otay rely heavily on autonomous industrial sweepers, forklifts, and automated tow vehicles. With factories transitioning from lead-acid to fast-charging LiFePO4, our 24V to 72V wide-input buck regulators deliver the high-amp transient surge capability necessary to drive heavy drive motors, guidance LIDAR arrays, and onboard PLCs without logic resets or brownouts.

Aerospace & Precision Electronics (Valle Bonito & Otay)

Operating within aerospace wiring, flight harnesses, and military telecommunications assembly clusters, Tier-1 and Tier-2 contractors encounter stringent MIL-STD and RTCA-DO environmental profiles. Eltrum supplies custom potted IP68 modules with anti-vibration damping silicone encapsulants that resist continuous mechanical shock, salt air ingress from Pacific coastal breezes, and thermal cyclings in unconditioned manufacturing spaces.

Strategic Sourcing Whitepaper

Nearshoring Acceleration & Regional Decarbonization Trends

Tijuana's IMMEX (Maquiladora) ecosystem is experiencing a structural shift accelerated by USMCA (T-MEC) regional value-content regulations. Engineering and procurement directors in Baja California face mounting pressures to optimize power electronics reliability and battery lifespan:

  • ✓ The Lead-Acid to LiFePO4 Migration: Industrial equipment across Baja California is aggressively shifting toward Lithium Iron Phosphate due to its 3,500+ cycle life, rapid charging capability, and zero hazardous off-gassing. Conventional alternator regulators fail by cooking LiFePO4 cells or triggering safety BMS cutoffs; intelligent multi-stage CC/CV DC-DC chargers are now mandatory to ensure predictable charging profiles.
  • ✓ Resilience Against Border Grid Voltage Spikes: Local manufacturing clusters frequently report high line-voltage fluctuation and common-mode transients from utility switches. OEM battery chargers integrated into machinery must exhibit wide AC input thresholds (90V–264V AC) and robust inductive surge suppression to guarantee uninterrupted shift operations.
  • ✓ Smart Telemetry & RS485 Communication: Modern maquiladora plants demand real-time telemetry on battery State of Charge (SOC), internal temperatures, and charge cycle counts. Eltrum's RS485-enabled buck-boost and AC chargers seamlessly integrate into plant-wide SCADA and facility tracking networks.
Advanced DC-DC converters and battery chargers engineered for industrial and vehicle installations
Enterprise Manufacturing Competence

Factory-Direct Engineering from Shenzhen Eltrum Electronic Co., Ltd.

Established in 2015, Shenzhen Eltrum Electronic Co., Ltd. is an onsite-verified power conversion manufacturer operating under rigorous ISO 9001 quality management guidelines. Serving enterprise OEMs across North America, Europe, and Latin America, our facilities integrate full surface-mount technology (SMT), automated transformer winding, potting encapsulation, and burn-in testing.

500+
Standard Power Models
130+
Export Countries Served
3,000m²
Production Infrastructure
5 pcs
Low Prototype MOQ

ISO 9001 Quality Management & CE/RoHS Certifications

Every LiFePO4 battery charger and isolated DC-DC converter series is engineered in full compliance with CE low-voltage and electromagnetic compatibility directives as well as RoHS hazardous substance restrictions. Batch-specific Certificates of Conformity (CoC) and complete bench-test reports are provided to streamline maquiladora customs imports into Baja California.

Bespoke OEM / ODM Tailoring & Buyer-Label Services

We work directly with Tijuana design teams on proprietary battery chemistries. Customizations include tailored constant current (CC) and constant voltage (CV) curves, float parameters, multi-rail buck-boost voltage stabilization (5V to 90V), private-label silk screening, custom wiring harness terminations (Anderson, Amphenol, Deutsch), and custom mechanical enclosures.

100% Full-Load Burn-In & Stress Testing

Field returns represent massive losses on fast-moving industrial lines. To eliminate infant mortality, 100% of our products undergo high-temperature aging chambers under 100% rated load, thermal cycling, and high-voltage dielectric withstand testing prior to final dispatch via air express or cross-Pacific sea freight consolidation.

Procurement Clarity

Frequently Asked Questions by Tijuana Procurement & Engineering Teams

Detailed answers addressing customs clearance under IMMEX/Pedimento frameworks, electrical validation, thermal derating, and cross-border logistics.

How do Tijuana maquiladoras handle shipping, customs (Pedimento A1), and USMCA compliance for Eltrum power products?
Orders destined for Tijuana can be shipped under standard FOB or EXW terms directly to your San Diego/Otay Mesa forwarder's US warehouse for cross-docking into Mexico via your designated Mexican customs broker (Agente Aduanal). Alternatively, we execute direct air-express deliveries (DHL/FedEx/UPS) straight to your plant in Parque Industrial El Florido, Valle Sur, or Otay with all required HS tariff codes (8504.40), detailed commercial invoices, and packing lists calibrated to facilitate smooth virtual pedimento (V1) or permanent import (A1) processing.
What is the minimum order quantity (MOQ) for custom-parameter battery chargers?
To empower Tijuana engineering teams to conduct rigorous bench evaluations, functional prototyping, and pre-production validation, our standard charger and converter models start at an accessible MOQ of just 5 units. For customized voltage rails, non-standard connectors, or software-tuned charging curves, initial qualification batches typically range from 10 to 50 units, followed by full volume batch scaling.
Why must a dedicated DC-DC charger be utilized instead of a standard buck converter for charging LiFePO4 banks from an engine alternator?
Standard buck converters output a fixed voltage with constant voltage characteristics, but lack a constant current (CC) phase and safety termination logic. LiFePO4 cells present near-zero internal resistance when depleted; a standard buck regulator will attempt to supply infinite current, triggering its own overcurrent shutdown or burning out vehicle alternators. An Eltrum DC-DC battery charger manages a strict CC/CV multi-stage profile (e.g., 14.6V bulk charge tapering to float) while protecting vehicle alternators from thermal overload.
How do Eltrum chargers maintain thermal stability during high ambient summer conditions in Baja California?
Tijuana industrial areas frequently experience elevated factory floor temperatures during summer cycles. Our high-power units utilize one-piece extruded anodized aluminum heat-sink enclosures filled with thermally conductive epoxy resin (UL 94V-0 rated). This construction facilitates rapid conduction away from switching MOSFETs and transformers to the outer fins, eliminating the vulnerability of mechanical cooling fans that can jam from airborne dust or particulate matter.
Can charging voltage setpoints be recalibrated for proprietary BMS requirements or non-standard cell topologies?
Yes. Through our OEM engineering division, our factory can preset custom absorption cutoff voltages (such as 14.2V, 14.4V, or 14.6V for 4S LiFePO4, or 41.5V/43.8V for 12S configurations), float voltages, and tail-current cutoff thresholds to align precisely with your battery supplier's Battery Management System (BMS) overvoltage protection gates.
What payment terms and documentation are provided to corporate purchasing departments?
We accommodate standard international corporate transactions via Wire Transfer (T/T), PayPal for sample evaluations, and Escrow services in USD or CNY. We provide comprehensive commercial invoices, packaging manifests with gross/net weights and dimensions, Certificate of Origin paperwork, and CE/RoHS compliance declarations required by corporate trade departments.

Plan Your Next OEM Battery System with Confidence

Connect directly with Eltrum's power electronics engineering team. We supply tailored schematics, thermal calculations, and immediate prototype proposals for your Tijuana production line.