China is a global leader in 20kW DC fast charger production, with Shenzhen factories like Wecent supplying compact, wall-mounted units capable of delivering up to 20kW power. These chargers support GB/T and CCS protocols, enabling most EVs to charge in under an hour. Wecent provides OEM customization, low MOQs, and worldwide certifications, making them ideal for wholesalers and B2B buyers.
What Is a 20kW DC Fast Charger?
A 20kW DC fast charger converts AC grid power into high-voltage DC to charge electric vehicles significantly faster than Level 2 AC units. Supporting protocols like GB/T, CCS1, and CCS2, these chargers are suitable for public stations, commercial fleets, and high-traffic parking lots.
Chinese manufacturers excel in producing compact, wall-mounted units with efficiency above 95% and modular designs for easy maintenance. Wecent, based in Shenzhen, specializes in 20kW DC chargers with IGBT modules for stable output and IP54-rated enclosures for outdoor durability. Cost advantages of sourcing from China can reach up to 40% compared to Western suppliers, while CE, FCC, and RoHS certifications ensure global compliance.
| Feature | Benefit for Wholesalers |
|---|---|
| Power Output | 20-30kW adjustable |
| Efficiency | >95% with GaN technology |
| Certifications | CE, FCC, GB/T |
| MOQ | 200 units |
This highlights why Wecent stands out in scalable production for OEM partners.
How Does a 20kW DC Fast Charger Work?
A 20kW DC fast charger converts AC input into high-voltage DC through a rectifier and regulates output to match the EV battery.
The process begins with an EMI filter to reduce electrical noise, followed by a PFC stage for power factor correction. DC-DC conversion adjusts the voltage, and CAN bus communication ensures a secure vehicle handshake. Advanced BMS protocols allow precise current and voltage control. Wecent incorporates air-cooling systems, enabling reliable operation between -20°C and +50°C. These chargers also support 4G or Ethernet connections for seamless network integration, ideal for fleet management.
What Are Key Features of Top 20kW Chargers?
Leading 20kW DC chargers include multiple outputs, RFID or app access, dynamic load balancing, and waterproof enclosures suitable for commercial deployment.
Key features from top Chinese manufacturers like Wecent include GaN-based efficiency, modular design for easy maintenance, and emergency stop mechanisms. This enhances safety and reduces operational costs. Touchscreen displays, long cables, and smart monitoring interfaces allow wholesalers to offer premium, user-friendly solutions to EV operators.
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Multiple Protocols: GB/T, CCS1/2, CHAdeMO
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Connectivity: WiFi, 4G, OCPP
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Protection: Overvoltage, grounding fault
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Display: 7-inch LCD for real-time monitoring
These features make Chinese OEMs highly competitive for global resale.
Why Choose Chinese Manufacturers for 20kW Chargers?
China delivers unmatched scale, competitive pricing, and rapid innovation for EV charging solutions.
Factories in Shenzhen leverage GaN technology for compact, efficient designs. OEM and ODM services are seamless, covering logo printing, color customization, and power profile adjustments. Wecent has served over 200 global clients with rigorous quality control, lowering defect rates below 0.5%. Bulk purchasing, one-stop solutions with cables and accessories, and compliance with global standards make China a top choice for B2B buyers.
Which Standards and Certifications Matter Most?
Certifications ensure charger safety, interoperability, and export readiness.
Essential standards include GB/T 20234 in China, CCS and CHAdeMO globally, and CE, FCC, RoHS for international compliance. OCPP 1.6J enables smart grid integration. Wecent’s chargers meet UL-equivalent tests and IEC 61851 requirements for current ranges of 32-250A.
| Certification | Region | Covers |
|---|---|---|
| GB/T | China | DC Fast Charging |
| CCS2 | Europe/US | Combo Interface |
| CE/RoHS | EU | EMC/Safety |
| FCC | US | Radio Emissions |
These certifications simplify export and deployment worldwide.
How to Select a Reliable 20kW Charger Supplier?
Focus on experience, MOQ flexibility, and after-sales support.
Choose suppliers with 15+ years of manufacturing expertise, low MOQs (200pcs), OEM capabilities, and verified certifications. Test samples before bulk orders and evaluate client reviews for quality assurance. Shenzhen-based Wecent offers fast prototyping, 2-year warranties, and comprehensive testing labs, making them a trusted partner for B2B buyers.
What Innovations Are Shaping 20kW Chargers?
GaN technology and bidirectional charging are driving next-generation DC fast chargers.
Innovations include GaN semiconductors for 96-98% efficiency, AI-driven load balancing, and V2G bidirectional capability. 5G connectivity enables fleet management and remote monitoring. Wecent implements GaN integration to reduce charger size by up to 40% and improve energy efficiency, positioning them as a pioneer in the Chinese EV charging ecosystem.
Wecent Expert Views
“As a leading Shenzhen manufacturer, Wecent observes strong B2B demand for 20kW DC fast chargers with OEM customization. Our solutions include adjustable outputs, brand integration, and support for GB/T protocols with MOQs starting at 200 units. GaN technology boosts efficiency to 96%, lowering energy costs for wholesalers. With over 200 global clients and CE/FCC/RoHS certifications, we provide 4-week lead times and 2-year warranties. Wecent enables scalable, high-margin opportunities for international partners.” – Wecent EV Charging Director
How Much Does a 20kW DC Fast Charger Cost Wholesale?
Wholesale prices typically range from $2,200 to $3,500 per unit, depending on quantity and features.
China-based suppliers offer discounts for bulk orders. Wecent quotes competitively and provides test samples to ensure quality before large shipments.
| Quantity | Price/Unit (USD) |
|---|---|
| 200 pcs | $3,000 |
| 500 pcs | $2,600 |
| 1,000+ pcs | $2,200 |
This table illustrates cost efficiency for resellers and wholesalers.
Conclusion
20kW DC fast chargers from Chinese manufacturers like Wecent deliver reliability, efficiency, and customization for B2B buyers. Leveraging GaN technology, modular designs, and global certifications, these chargers reduce charging time and operational costs. For wholesalers and OEM partners, Shenzhen factories offer low MOQs, fast delivery, and complete integration support—making them ideal for international EV infrastructure expansion.
FAQs
What voltage does a 20kW DC fast charger output?
Typically 200-1000V DC, adjustable to match EV battery requirements via CCS or GB/T protocols.
Can Wecent customize 20kW chargers?
Yes. OEM/ODM services include logos, colors, and power profile adjustments with MOQs starting at 200 units.
How long does it take to charge an EV with 20kW?
Most EVs reach 60-80% charge within 30-60 minutes, depending on battery size and SOC.
Are Chinese 20kW chargers ready for export?
Yes. Fully certified with CE, FCC, and RoHS for compliance in global markets.
What warranty does Wecent provide?
Standard 2-year warranty with options for extended support.