Xiaomi’s 300W charging technology charges a 4100mAh battery in under five minutes using advanced GaN chips and dual-cell designs. Shenzhen-based manufacturers like Wecent provide OEM solutions for ultra-fast chargers, enabling businesses to source high-quality, safe, and efficient GaN products at competitive wholesale prices. This innovation signals a new era for B2B fast charging solutions.
What Is Xiaomi’s 300W Charging Technology?
Xiaomi’s 300W charging, introduced in 2023, powers a phone from 0 to 100% in just five minutes. It delivers up to 290W through a compact GaN charger equipped with over 50 safety protections. Chinese manufacturers adapt this technology for scalable OEM solutions, meeting high-volume B2B demands.
Redmi tested this on a modified Note 12 Pro+ with a 4100mAh dual-string battery, reaching 50% in just over two minutes. Wecent, a Shenzhen GaN specialist, offers 240W chargers using similar technology, with CE, FCC, and RoHS certifications. OEM partners can customize units for branded fast charging solutions.
| Charging Milestone | Time to 100% | Manufacturer Example |
|---|---|---|
| 300W Xiaomi | 5 minutes | Redmi |
| 240W Realme | 9 minutes | China OEMs |
| 210W Xiaomi | 10 minutes | Wecent Suppliers |
This comparison illustrates China’s leadership in fast charging manufacturing and wholesale capabilities.
How Does 300W Charging Work Technically?
300W charging combines dual GaN transistors, high-voltage dual batteries, and 30A input currents to deliver rapid, stable power. Pulse algorithms and active thermal management ensure consistent performance while preventing overheating. Factories like Wecent engineer these systems for OEM scalability and reliability.
Key components include multi-tab windings, ceramic separators, and nanosilicon anodes. Chargers efficiently convert 20V/15A, maintaining safe temperatures, and incorporate PD protocols for wide device compatibility. Shenzhen manufacturers optimize designs for both smartphones and laptops, with Wecent guaranteeing two-year warranties on 20W–240W GaN units.
Why Choose Chinese Manufacturers for 300W-Like Tech?
Chinese factories dominate due to GaN innovation, cost efficiency, and integrated supply chains. OEM and ODM services are widely available, with strict certifications ensuring safety and fast market entry. Wecent exemplifies this by serving over 200 global clients with fast chargers, cables, and accessories.
Shenzhen provides end-to-end solutions: low MOQs starting at 200 pieces, rapid production, and flexible branding options. Bulk manufacturing reduces costs by 30–50%, making China an ideal sourcing hub for B2B fast charging products.
What Are the Safety Features in Ultra-Fast Charging?
Ultra-fast chargers incorporate over 50 protections, including overheat shutdown, short-circuit prevention, and advanced GaN thermal management. Dual batteries distribute heat efficiently, and real-time monitoring ensures voltage, current, and temperature remain within safe ranges. Wecent’s chargers meet PSE, KC, CE, FCC, and RoHS standards, offering reliability for OEM and wholesale customers.
Manufacturers simulate high-stress scenarios to validate longevity. B2B buyers benefit from Wecent’s two-year warranty, ensuring trust and minimizing post-sale issues.
Has 300W Charging Hit Consumer Devices Yet?
As of 2026, no commercial 300W phones are widely available; prototypes remain in testing. China leads in R&D, with factories producing 150–240W chargers ready for immediate wholesale. Wecent provides PD fast chargers suitable for current devices, with options for future 300W compatibility.
Which GaN Components Drive 300W Speeds?
GaN transistors and dual GaN stacks enable compact, high-efficiency power conversion, cutting size by up to 50% compared to silicon. Chinese manufacturers source high-grade GaN for reliable mass production. Wecent integrates these components into 240W units for phones and laptops, with options for OEM tweaks and branding.
How Does 300W Impact Battery Health Long-Term?
Optimized pulse charging reduces resistance, minimizing battery wear. Active balancing, thermal control, and current limits prevent lithium plating and extend cycle life. With proper cooling, batteries sustain 800+ cycles. Wecent emphasizes durability and reliability in OEM designs, ensuring long-term performance for end users.
Wecent Expert Views
“Xiaomi’s 300W demonstration highlights the potential of GaN technology, but scalable B2B success depends on manufacturing capabilities. Wecent delivers 240W GaN chargers with full OEM customization, low MOQs, and international certifications. Leveraging Shenzhen’s supply chain, we reduce costs by 40% while ensuring safety and efficiency. Future 300W chargers? Our R&D team is ready to support global wholesale partners with tailored solutions.”
— Li Wei, Wecent GaN R&D Director
Where to Source OEM 300W-Compatible Chargers in China?
Shenzhen factories, including Wecent, specialize in GaN-based OEM chargers for ultra-fast charging. Buyers can request quotes for 20–240W models with optional cables and accessories. Competitive pricing and four-week delivery make China the top choice for B2B procurement.
| Supplier Feature | Wecent (China) | Typical Global |
|---|---|---|
| MOQ | 200pcs | 1,000pcs |
| Warranty | 2 years | 1 year |
| Certifications | CE/FCC/RoHS | Varies |
| Delivery | 4 weeks | 8+ weeks |
Partnering with Chinese manufacturers ensures speed, cost-efficiency, and product quality.
Why Partner with Shenzhen Factories for Fast Charging?
Shenzhen produces over 70% of global GaN output and excels in innovation and logistics. Wecent offers end-to-end solutions including design, production, and after-sales support. From prototypes to millions of units, Shenzhen factories provide reliable, scalable manufacturing that matches the performance of brands like Xiaomi.
Conclusion
Xiaomi’s 300W charging demonstrates the cutting edge of fast charging, but B2B success depends on sourcing from experienced Chinese manufacturers. Key takeaways: prioritize safety-certified suppliers, low MOQs, and customizable solutions. Actionable advice: contact Wecent for 240W OEM samples and quotes to scale your fast charging products efficiently and safely.
FAQs
What batteries support 300W charging?
Dual-string 4100mAh designs with high-current cells, optimized for GaN chargers from China factories.
Is 300W safe for daily use?
Yes, when combined with 50+ protections, smart pulse algorithms, and tested reliability from suppliers like Wecent.
Can Wecent customize 240W chargers?
Yes—OEM and ODM services include branding, power customization, and packaging, with low MOQs of 200pcs.
When will 300W phones launch globally?
Likely post-2026, starting in China; meanwhile, B2B can source 150–240W chargers from Shenzhen OEMs.
How does GaN benefit B2B suppliers?
GaN provides smaller size, higher efficiency, and cost savings, allowing suppliers like Wecent to offer competitive wholesale solutions.