21/04/2020
Audit Insights: How Does a Factory Audit Go?
Identifying the right factory determines the future of your products, because the capabilities and capacity of your manufacturer have to align with your needs and expectations.
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1. Production Process and Common Quality Issues for Chargers
Click to review the detailed production process and common quality issues for chargers.
2. Ensuring Chargers' Safety & Compliance with Laboratory Testing
We arrange laboratory testing to confirm adherence to international safety and performance standards:
- IEC 62368-1 (Safety of Information Technology Equipment)
- UL 60950-1 (Safety for Information Technology Equipment)
- CE Marking (European Conformity)
- RoHS (Restriction of Hazardous Substances)
- FCC Part 15 (Electromagnetic Compatibility)
- California Proposition 65 (Hazardous Substances)
- DOE Energy Efficiency (Energy Consumption Standards)
- UN 38.3 (Lithium Battery Transportation Safety)
3. Common Defects in Chargers Inspections
Function & Performance
- Charging failure or intermittent charging
- Low voltage/current output
- Incompatible with specified devices
- Slow charging speed
- LED indicator malfunction
Electrical Safety
- Short circuits or exposed wiring
- Inadequate insulation
- Incorrect voltage/current output
- Loose or faulty connectors
- Over-current/over-voltage protection failure
- Overheating during operation
Appearance & Build Quality
- Scratches, dents, or discoloration on casing
- Poorly molded plastic or uneven seams
- Loose ports or connectors
- Misaligned labels or printing errors
- Cable insulation damage
Material & Component Issues
- Substandard cable material (e.g., thin gauge wire)
- Low-quality internal components
- Use of non-compliant plastics
- Incorrect component values
Packaging & Labeling
- Missing or incorrect safety warnings
- Illegible specifications
- Damaged retail packaging
- Incorrect barcode or model number
- Missing user manual or warranty card
4. Which Chargers Products Do We Have the Most Experience With?
Wall Chargers
- USB-A Wall Chargers
- USB-C PD Wall Chargers
- Multi-Port Wall Chargers
- GaN Chargers
Wireless Chargers
- Qi Wireless Charging Pads
- Multi-Device Wireless Chargers
- Wireless Charging Stands
- Magnetic Wireless Chargers
Car Chargers
- USB Car Chargers
- USB-C PD Car Chargers
- Multi-Port Car Chargers
- Fast Charging Car Adapters
Portable Power Banks
- Standard Power Banks
- Fast Charging Power Banks
- Solar Power Banks
- MagSafe Compatible Power Banks
Laptop Chargers
- USB-C Laptop Chargers
- Universal Laptop Adapters
- OEM Replacement Chargers
- Car Laptop Chargers
5. Our Chargers‘ Quality Control Services
Product Inspection
On-site inspections verify charger quality, functionality, and craftsmanship to meet your exact specifications.
Supplier Audits
Pre-audit suppliers to assess manufacturing capabilities and quality management systems before production begins.
Laboratory Testing
Lab tests confirm chargers comply with international safety, performance, and regulatory standards.
Magsafe Function Test
Real-use Testing
6. How V-Trust Helps You Find the Right Chargers Supplier
We conduct supplier audits to verify production capabilities and compliance before order placement.
Factory Audit
Quick verification of supplier legitimacy through:
- Factory existence and document verification
- Basic production capacity review
- Contact person verification
In-Depth Factory Audit
A comprehensive evaluation covering:
- Production capacity & facility assessment
- Quality control system evaluation
- Social compliance verification
7. How V-Trust Helps You Control the Quality of Chargers
V-Trust offers a comprehensive quality control solution for Chargers, including Sample Checks, Production Monitoring, During Production Inspection, Pre-Shipment Inspection, and Container Loading Supervision. Our services are designed to minimize risks, ensure product safety, and guarantee compliance with international standards, providing you with peace of mind throughout your sourcing process.
Sample Check
Our engineers meticulously evaluate charger samples for critical aspects such as charging efficiency, compatibility with various devices, thermal performance, and overall build quality. We also verify output voltage and current stability to ensure they meet specifications, helping you select reliable suppliers.
Production Monitoring
During charger production, our inspectors provide continuous on-site monitoring. They track key processes like PCB assembly, component soldering, casing integration, and cable attachment to identify and address issues such as incorrect wiring, poor connections, or material defects early, optimizing production efficiency.
During Production Inspection
Conducted when at least 10% of the charger order is completed, this inspection focuses on detecting early-stage problems. We check for issues like incorrect circuit board layout, faulty components, inconsistent output, or cosmetic flaws, allowing for timely corrective actions to prevent larger quality issues.
Pre-Shipment Inspection
Before shipment, a thorough final inspection is performed to verify the overall quality and functionality of your Chargers. This includes comprehensive electrical safety tests, performance checks (e.g., charging speed, temperature rise), cosmetic review, and verification of correct labeling, packaging, and quantity according to your order.
Container Loading Supervision
Our team supervises the container loading process to ensure your Chargers are properly packed, securely stacked, and loaded into clean, dry containers. We verify carton markings, quantity, and proper handling to prevent damage during transit and ensure safe delivery to your destination.
8. The Most Related Sourcing Fairs in Asia
April 13-16, 2026
Hong Kong Electronics Fair (Spring Edition)
Hong Kong Convention and Exhibition CentreShowcasing a wide array of cutting-edge electronic products, from consumer electronics to industrial applications, specifically listing "Battery Chargers" among the exhibited items.
https://www.hktdc.com/event/hkelectronicsfairse/en
April 11-15, 2026
Global Sources Consumer Electronics (incorporating Mobile Electronics)
AsiaWorld-Expo, Hong KongFeaturing innovative designs in mobile devices, smart wearables, mobile accessories, and charging products, including charging stations and power solutions.
https://www.globalsources.com/trade-fair/hongkongshow/ce
July 1-3, 2026
electronica China
Shanghai New International Expo Centre (SNIEC), Shanghai, ChinaIt covers the entire industry chain from product design to application implementation, including power electronics, embedded systems, and various components relevant to charger manufacturing.
https://www.electronicachina.com.cn/en
Why Choose V-Trust for Chargers Quality Control?
20
Years of Experience
650+
Trained Inspectors
10
Asian Countries
13,000
Satisfied Clients
Asia's leading product inspection company with full-time, professionally trained inspectors and comprehensive accreditation for inspection, audit, and lab testing services.
Chargers Quality Control: Frequently Asked Questions (FAQ)
Why do I need product inspections for chargers?
If you are worried about or have experienced problems such as poor quality, incorrect shipments, or wrong packaging for goods imported from Asia, product inspection services is your solution. V-Trust product inspection service can help you have accurate understanding about the quality of the goods without going to the factory by yourself.
Do I need to send you an approved sample for chargers?
It would be great if you can send the approved sample to V-Trust before the inspection for reference. Compared with product photos or specification documents, a real product sample allows V-Trust engineers to do a more thorough comparison check.
How many days in advance should I book the pre-shipment inspection?
Though sometimes it's possible to book next-day inspections for many manufacturing clusters where V-Trust has a large team of full-time inspectors, we recommend booking with us at least three days in advance. Early booking is important for appropriate scheduling and good preparation before the inspection.
Who will I be in contact with throughout the whole process?
There will be one dedicated account manager who will be assigned as your main contact point at V-Trust. You will receive prompt responses whenever you have any questions regarding the inspection arrangement.
How long does it take to know the inspection result?
The official report, reviewed and signed by an authorized V-Trust technical manager, will be available within 24 hours after each inspection. Same day report is available if you would like to know about the inspection findings on the same day. V-Trust has the highest same day report rate in the inspection industry.
What if I have questions after I check my V-Trust report?
Please don’t hesitate to contact us whenever you have any questions. V-Trust team is always available even after the inspection is completed.
Request Your Inspection Today
Ready to ensure the quality of your products? Contact our team to discuss your specific requirements.