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

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Industrial DC-DC Battery Chargers manufacturing background
ISO 9001 Certified Power Manufacturer

DC-DC Battery Chargers

Smart multi-stage battery-to-battery charging modules engineered for LiFePO4, Ternary Lithium, and Lead-Acid dual bank systems. Robust IP67 aluminum encapsulation for vehicle, marine, and industrial applications.

Export Standard Models

Engineered Battery-to-Battery Chargers

Designed to overcome Euro 5/6 smart alternator voltage drops, providing intelligent CC/CV profiles that protect both the starter alternator and auxiliary leisure banks.

Ternary Lithium 10A Battery to Battery Charger DC 9-36V to DC 12.6V Lithium Battery Charger for RV EV Boat

10A Battery to Battery Charger DC 9-36V to DC 12.6V Lithium Battery Charger

  • Input Voltage9–36V DC
  • Output Rating12.6V DC @ 10A (126W)
  • Chemistry3S Ternary Lithium
  • EnclosureWaterproof Die-cast Aluminum
  • Target SectorRV, Boat, EV Dual Battery
Wholesale Tier$15.00 - $18.00
Min. Order: 5 pcs
High Current 20A Waterproof 10-36V to 14.6V 20A LiFePO4 DC-DC Battery Charger

Waterproof 10-36V to 14.6V 20A LiFePO4 DC-DC Battery Charger

  • Input Voltage10–36V DC (12V/24V compatible)
  • Output Rating14.6V DC @ 20A (292W)
  • Chemistry4S LiFePO4 (Lithium Iron)
  • ProtectionOver-voltage, Thermal, Reverse, Short
  • Ingress RatingIP67 Full Epoxy Potting
Wholesale Tier$29.00 - $35.00
Min. Order: 1 unit
Dual Bank Ready Compact Size 10-36V to 12.6V 20A Dual Battery System DC-DC Charger

Small Size 10-36V to 12.6V 20A Dual Battery System Lithium Charger

  • Input Voltage10–36V DC (Auto-Detect)
  • Output Rating12.6V DC @ 20A (252W)
  • Efficiency≥ 94% Peak Synchronous
  • CoolingIntegrated High-Fin Convection
  • Form FactorUltra-compact Fleet Footprint
Wholesale Tier$29.00 - $35.00
Min. Order: 1 unit
High Voltage Boost Smart 36V Lithium Battery Charger DC 12V to DC 43.8V 13A Waterproof Step-Up Charger

Smart 36V Lithium Charger DC 12V to DC 43.8V 13A Step-Up Charger

  • Input Voltage12V DC Vehicle Bus
  • Output Rating43.8V DC @ 13A (569.4W)
  • TopologyStep-Up Boost Charging
  • Target Battery12S LiFePO4 (36V Nominal Pack)
  • ApplicationsGolf Carts, Light EV, Marine Motors
Wholesale Tier$71.00
Min. Order: 5 units
Quality Engineering

Why International B2B Buyers Trust Eltrum

Every DC-DC battery charger is built to withstand relentless high-temperature, off-road vibration, and salt-mist operating profiles.

Smart Alternator Ready

Engineered with automatic ignition sensing and wide input voltage regulation, resolving the voltage sagging issues inherent in modern Euro 5/6 smart charging systems.

3-Stage CC/CV Curve

Pre-programmed with constant current bulk charging, constant voltage absorption, and intelligent maintenance stages to maximize LiFePO4 cycle longevity and prevent BMS lockouts.

IP67 Resin Potting

All internal PCB components are 100% vacuum encapsulated in thermally conductive epoxy, ensuring complete imperviousness to moisture, mechanical shock, and dust accumulation.

Direct OEM / ODM Flexibility

Tailored output voltages (12.6V, 14.6V, 16.8V, 29.2V, 43.8V, 58.4V), custom wiring harnesses, connectors, and private label branding directly from our Shenzhen production line.

Selection Matrix

Technical Comparison of Standard DC-DC Chargers

Review standard parameters across our mainstream DC-DC charging series. Customized electrical specs are available on request.

Model Series Input Voltage Output Voltage Max Current Battery Chemistries Ingress Protection Efficiency
WG-10A126L 9–36V DC 12.6V DC 10A 3S Ternary Lithium IP67 Sealed Aluminum ≥ 93%
WG-20A146LFP 10–36V DC 14.6V DC 20A 4S LiFePO4 Pack IP67 Vacuum Potted ≥ 94%
WG-20A126L-C 10–36V DC 12.6V DC 20A 3S Ternary Lithium / AGM IP67 Heavy-duty Diecast ≥ 94%
WG-13A438L-B 11–16V DC 43.8V DC 13A 12S LiFePO4 (36V System) IP67 Thermal Convection ≥ 92%
Verified Manufacturing Facility

Built with Precision at Shenzhen Eltrum Electronic Co., Ltd.

Established in 2015, Shenzhen Eltrum Electronic Co., Ltd. operates an advanced manufacturing and testing facility in Shenzhen, China. Our facilities strictly adhere to ISO 9001 certified quality management principles to deliver robust power conversion equipment for clients worldwide.

Every batch of DC-DC battery chargers undergoes rigorous burn-in testing, multi-load thermal stress analysis, and full-spectrum electrical parameter verification before boxing and export dispatch.

100%Full Load Burn-in
ISO 9001Standard Process
CE / RoHSCertified Compliance
Procurement FAQ

Common Inquiries from Engineering Teams

Answers to technical, regulatory, and procurement questions regarding our DC-DC charging series.

How does a DC-DC charger protect secondary lithium batteries from smart alternator fluctuations?
Euro 5 and Euro 6 vehicles utilize smart alternators that drop output voltage drastically during braking or coasting to reduce emissions. This fluctuating voltage cannot reliably charge a secondary lithium battery. Our DC-DC chargers maintain an isolated buck-boost regulation circuit, taking whatever voltage the vehicle provides and boosting or bucking it into a strictly controlled constant current / constant voltage profile tailored to the battery chemistry.
What is the lead time for standard models versus custom OEM configurations?
Standard sample units are usually dispatched within 3 to 5 business days. For volume OEM production orders (custom wiring looms, customized cutoff voltages, private silkscreening), the standard lead time is generally 15 to 25 working days depending on batch quantities.
Are these chargers compliant with international safety and environmental directives?
Yes. All DC-DC battery chargers manufactured by Shenzhen Eltrum Electronic Co., Ltd. are fabricated in compliance with CE and RoHS standards. Detailed test reports and declarations of conformity can be provided to support your regional customs clearance.

Download Full DC-DC Charger Technical Catalog

Request comprehensive specifications, mechanical 2D/3D drawings, and OEM volume pricing directly from Shenzhen Eltrum Electronic Co., Ltd.

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