Buck Step-Down
Engineering Equipment Catalog
High-Performance Power Conversion & Charging Modules
Engineered to withstand rigorous commercial and industrial cycles. All models feature CE/RoHS compliance, low electromagnetic interference (EMC), and robust thermal architectures verified for European grid tolerances.
Frequency Shift
Pure Sine Wave
Galvanic Isolation
IP67 Waterproof
Automatic Buck-Boost
Toroidal Core
Float Voltage
2003
Established Expertise
1,229 m²
SGS-Audited Facility
10+
SMT & Assembly Lines
100%
Full-Load Burn-in Aging
98.2%
Response Rate within 24h
Strategic Alignment: Powering Île-de-France Decarbonization Mandates
The Paris metropolitan region (Métropole du Grand Paris) is undergoing Europe's most aggressive commercial fleet transformation. Driven by stringent environmental policies, including the accelerated implementation of the Zone à Faibles Émissions mobilité (ZFE-m) and the phase-out of Crit'Air 3, 4, and 5 diesel commercial vehicles, commercial logistics carriers, municipal operators, and private enterprises across Paris, Boulogne-Billancourt, Saint-Denis, and the Gennevilliers logistics corridor require dependable, heavy-duty battery charging infrastructures and DC-DC voltage management solutions.
Procuring directly from our high-precision Chinese factory gives French original equipment manufacturers (OEMs), charging station integrators, and fleet distributors a definitive competitive edge: Tier-1 power electronics components, high-density silicon carbide (SiC) switching topologies, high power factor correction (Active PFC > 0.98), and ruggedized galvanic isolation that comply rigorously with European electrical standards (CE, Low Voltage Directive 2014/35/EU, EMC Directive 2014/30/EU, and EN 61851-1).
Regulatory Notice for French Procurement Engineers: All Varnix/YUCOO high-frequency battery chargers and industrial switching power supplies comply with French harmonic emission standards (EN 61000-3-2 Class A/D) and low THD (< 3%) specifications required by Enedis distribution interfaces throughout the Grand Paris district.
Targeted Engineering Scenarios Across Greater Paris
Unlike standard consumer chargers, our industrial product series is engineered specifically for mission-critical cycles where operational downtime carries steep financial penalties. We support system integrators across three primary regional applications:
Urban Last-Mile Electric LCV & Cargo Fleets
High-density depots situated along the Gennevilliers logistics port and Rungis International Market deploy our multi-stage CC/CV battery chargers for 48V, 72V, and 96V LiFePO4 commercial utility vans. Dynamic temperature compensation algorithms protect sensitive cell chemistries during sub-zero winter charging cycles typical of Northern France.
Automated Material Handling & AGVs
Automated guided vehicles (AGVs) and heavy electric forklifts powering warehouses around Roissy-Charles de Gaulle and Paris-Nord 2 utilize our isolated step-down converters (48V/72V/96V to 12V 42A) to supply ultra-clean auxiliary DC power to on-board telemetry, LiDAR navigation, and robotic arm actuators without electrical ground loops.
Seine River Electric Barges & Marine Hubs
In accordance with Voies Navigables de France (VNF) environmental directives for the Seine River decarbonization corridor, our IP67-rated sealed aluminum converters and toroidal pure sine wave inverters deliver marine-grade galvanic isolation, resisting salt-free freshwater humidity, corrosive spray, and high mechanical vibration.
Industrial Battery Charger & Power Architecture Matrix
Selecting the optimal power conversion equipment requires matching battery chemistry, internal impedance characteristics, thermal limits, and charging profile architectures. Our Chinese manufacturing facility produces both switch-mode high-frequency chargers and industrial isolated converters customized to client technical schedules:
| System Architecture | Input Voltage Specification | Output Voltage & Amperage | Conversion Efficiency | Industrial Safety Standard | Typical Paris Industry Use |
|---|---|---|---|---|---|
| Smart High-Frequency Charger | 180V–264V AC (Single Phase, 50Hz) | 12V, 24V, 48V, 72V, 96V (Up to 60A) | 94.5% ± 0.5% | EN 60335-2-29 | Commercial electric vans & warehouse GSE |
| Isolated DC-DC Buck Module | 40V–135V DC (Wide-Span Input) | 12V DC Stabilized @ 10A / 42A | 92.0% – 95.0% | EN 62368-1 Galvanic | AGVs, industrial robots & cabin telemetry |
| Toroidal Pure Sine Inverter | 12V / 24V / 48V DC Battery Bank | 230V AC ± 2%, 50Hz True Sine | 89.0% – 93.0% | EN 61000-6-2 EMC | Seine river logistics & mobile service workshops |
| Automatic Buck-Boost Stabilizer | 8V–40V DC Variable Input | 13.8V DC Fixed Float Voltage | 95.5% Synchronous | IP68 Potted Seal | Electric utility vehicles & sensitive IoT base units |
| Rotary Frequency & Phase Converter | 220V–240V Single Phase 50Hz | 380V–400V 3-Phase Balanced 50/60Hz | 91.0% High Inductive | CE Machinery Direct. | Suburban machine shops & imported tooling lines |
Every charging module developed by our engineering team utilizes high-reliability multi-stage charging algorithms: Bulk Charge (Constant Current), Absorption (Constant Voltage), and Float / Trickle Stage. Furthermore, for modern Lithium Iron Phosphate (LiFePO4) installations widespread in Paris, our chargers include CAN bus communication interfaces (CANopen, J1939) facilitating synchronized telemetry with client Battery Management Systems (BMS).
Verified Manufacturer Credentials
Why Parisian Importers & B2B Distributors Partner with Varnix
Combining 20+ years of high-frequency power electronics manufacturing in Guangdong with deep international export execution, we provide European clients with uncompromising quality and risk-free commercial terms.
SGS-Audited Plant
1,229 m² fully verified floor space, 58+ precision assembly and electrical testing technicians on-site.
ISO 9001:2015 QMS
Strict incoming component screening, solder paste automated optical inspection (AOI), and traceable serial coding.
Burn-In Screening
100% full-load thermal burn-in aging test (4-12 hours) ensures premature component infant mortality is eliminated at the factory.
DDP Paris Logistics
Seamless ocean freight via Port of Le Havre or express air freight to Roissy-CDG with all French customs duties cleared.
OEM/ODM Technical Customization: We offer custom DC input voltages (12V, 24V, 48V, 72V, 80V, 96V, 110V, 220V), specialized charging current cutoffs, customized anodized aluminum extrusions, private-label silk-screening, and tailored European packaging conforming to French EPR (Extended Producer Responsibility) packaging recycling guidelines.
Procurement & Technical Clarifications
Frequently Asked Questions: Sourcing Battery Chargers for France
Clear, direct answers for French procurement directors, electrical project managers, and logistics distributors.
Do your battery chargers and DC-DC converters comply with French and EU safety regulations?
Yes. All charging systems and power converters built for the European Union carry verified CE markings adhering to the Low Voltage Directive (LVD) 2014/35/EU and Electromagnetic Compatibility Directive (EMC) 2014/30/EU. Specific charger lines adhere to EN 60335-2-29 (particular requirements for battery chargers) and EN 61851 for electric vehicle conductive charging systems.
Materials fully comply with the European RoHS Directive 2011/65/EU and REACH regulations, eliminating hazardous lead, cadmium, and hexavalent chromium to ensure trouble-free inspection at French border control.
How are logistics and customs clearance handled for shipments delivered to Paris?
We provide full-spectrum Incoterms to accommodate your supply chain strategy: FOB, CIF, EXW, FCA, and DDP (Delivered Duty Paid). For high-volume wholesale orders, containerized freight typically discharges at Le Havre (France's leading container port) and transits directly to your warehouse across Île-de-France via rail or river feeder barges along the Seine.
Under DDP terms, our freight forwarders manage French VAT (TVA at 20%), import tariffs, and customs paperwork—eliminating hidden landing surcharges for your accounts department.
Can your chargers be customized for mixed battery chemistries (Lead-Acid, Gel, AGM, LiFePO4)?
Absolutely. Modern Parisian fleets operate diverse equipment: classic traction lead-acid forklifts alongside cutting-edge LFP micro-vans. Our smart chargers can be specified with MCU-controlled multi-profile dip switches or software programming cables, enabling technicians in the field to toggle voltage cutoff thresholds, absorption timing, and float voltages to match each battery chemistry precisely.
What is the standard Minimum Order Quantity (MOQ) and production lead time?
Standard catalog power supplies and converters feature a low sample MOQ of 1 to 10 units, allowing French engineering teams to conduct laboratory bench tests and thermal validation before mass rollouts. OEM/ODM custom orders (tailored enclosure colors, bespoke voltages, or branded faceplates) typically start at 50 to 100 units depending on chassis modifications.
Production lead time for standard volumes is 15–22 business days; urgent prototype sample batches can be dispatched via DHL/FedEx air courier to Paris in 5–7 days.
How does your factory handle after-sales service and warranty claims for overseas customers?
All units are covered by a formal contract-backed factory warranty ranging from 12 to 36 months. Because our response team maintains a verified 98.2% 24/7 service rate, technical queries receive direct feedback from senior electrical engineers within 24 hours.
In the rare event of a validated component defect, replacement PCB sub-assemblies or complete new units are dispatched immediately with spare part buffer kits included for fleet-scale contracts.
Accelerate Your Power Infrastructure Projects in France
Request comprehensive technical datasheets, full 2025/2026 industrial B2B price lists, and customized OEM quotations directly from our engineering team.