Keyulong Technology QC3.0 18W Fast Charger

1. Product Overview

The Keyulong Technology QC3.0 18W single USB fast charging adapter is a standardized product of the brand's fast charging series, suitable for charging various portable digital devices. Equipped with the QC3.0 fast charging protocol, it supports dynamic voltage regulation output with a rated maximum power of 18W, delivering excellent charging conversion efficiency.

This product is manufactured by Shenzhen Keyulong Technology Co., Ltd. as the original manufacturer. Following the R&D and manufacturing standards of stable reliability, compliant production and flexible customization, it provides standardized charging solutions for the consumer electronic charging accessories market.

2. Core Technology Analysis

1. QC3.0 Fast Charging Protocol

The product has a built-in QC3.0 fast charging voltage regulation mechanism. During charging, it dynamically adjusts the output voltage in the range of 3.6V-12V with a 200mV gradient, automatically matches the charging requirements of terminal devices, reduces energy loss during charging, and improves power utilization efficiency. It is also backward compatible with the QC2.0 protocol standard.

2. Multi-dimensional Safety Protection System

The whole device integrates a full set of intelligent protection circuits, covering multiple abnormal protection mechanisms:

• Output overvoltage lockout protection

• Output overcurrent protection

• Circuit short circuit protection

• High temperature overheat protection

When abnormal charging is detected, the device can automatically limit the current or cut off the output to ensure the safety of both the charging equipment and the adapter itself.

3. Core Performance Parameters

4. Product Certifications & Compliance Qualifications

This 18W QC3.0 fast charging adapter has passed compliance testing for major domestic and international markets, and holds authoritative certification qualifications from multiple countries:

1. CCC China Compulsory Product Certification

2. CE EU Safety Certification

3. FCC US Electromagnetic Compatibility Certification

4. UKCA UK Market Access Certification

5. Complies with RoHS 2.0 Hazardous Substance Restriction Certification

6. Complies with REACH EU Chemicals Control Certification

7. Complies with ERP EU Lot 7 Energy Efficiency Certification

8. Complies with CEC California Energy Efficiency Certification

9. Complies with DOE US Level VI Energy Efficiency Certification

10. Complies with California Proposition 65 Environmental Safety Certification

The full set of qualifications covers major sales regions including China, the EU, the US and the UK, meeting market access compliance requirements for cross-border trade, offline retail and online e-commerce channels.

5. Standardized Quality Control System

The product implements unified factory inspection specifications throughout the whole process. Multiple inspection procedures are set from raw material warehousing, semi-finished product processing to finished product delivery, with strict control over every production link.

• The shell is made of UL94 V-0 grade flame-retardant PC material for safe use;

• No-load standby power consumption ≤0.1W, complying with low energy efficiency standards;

• Suitable for conventional indoor use environment of 0℃~35℃;

• Full inspections including power-on, aging, withstand voltage and insulation tests are completed before delivery.

6. Core Product Features

• Dynamic voltage regulation fast charging architecture improves power conversion efficiency and shortens device charging time;

• Built-in temperature control circuit ensures stable shell temperature rise during charging;

• Multi-protocol compatible design, suitable for most mobile terminals with universal fast charging standards;

• Multi-national compliance certifications, adaptable to online and offline sales channels in multiple regions;

• Supports personalized customization services, including OEM laser engraved logo, special color, custom packaging, and in-depth customization of plugs and certifications for different countries.

7. OEM/ODM Customization Service

The brand provides one-stop customized supporting services for procurement customers:

• Solution consultation: Adaptable selection solutions will be provided within 1 working day;

• Sample delivery: Standard regular samples will be dispatched within 24 working hours;

• Delivery lead time for bulk orders: 15-20 working days;

Customizable items: shell appearance color, shell LOGO laser engraving, outer packaging design, plug specifications of multi-national standards, etc.

8. Application Scenarios

• Personal daily charging at home, office and on the go;

• Bulk procurement for corporate gifts and event souvenirs;

• Matching accessory supply for digital products;

• Standard charging accessory selection for cross-border e-commerce and foreign trade merchants;

• Procurement of supporting charging power for commercial enterprise equipment.

9. Product Positioning Summary

The Keyulong QC3.0 18W fast charging adapter targets the mass consumer charging accessories market, with core advantages of stable fast charging performance, regional compliance qualifications and standardized quality control system. It meets diverse demands including daily personal use, corporate bulk procurement and foreign trade cross-border supply. Relying on mature voltage regulation fast charging technology, full-process factory inspection and flexible customization services, it is an adaptable power accessory for general digital charging scenarios.

10. Product Pricing

CN plug: RMB 7.5 (ex-tax), US plug: RMB 8 (ex-tax), EU plug: RMB 8.2 (ex-tax), MOQ 1,000 units.

Small stock available for white CN plug version; small batch orders can be shipped within 24 working hours.

Quotation for special customization will be calculated separately based on actual requirements.