Let’s start with a short story. An American customer found a fast charging wall charger supplier online. The supplier claimed that they could manufacture high-quality fast charging wall chargers. The price quoted was very cheap.
Fast forward to the time of the inspection for the products. When the American customer inspected the items, he found that the charging speed was too low.
As the customer’s requirements were not met, the goods had to be re-done, which delayed the delivery date.
As the customer’s goods did not make it onto shelves in the United States on time he had lots of losses due to no sales. The supplier would only compensate his American customer according to their contract. This made the losses worse.
Here is some advice that can help when looking for a fast charging wall charger supplier in China.
What is Fast Charging?
Fast Charging describes the process of charging your device’s battery in a short time. To do this, it delivers more power during the charging process.
How Do Manufacturers Increase The Power To Enable Fast Charging?
To charge a phone you need Amperage, Wattage, and Voltage;
- Amperage (A) is the current or amount of electricity
- Voltage (V) is the speed or strength of the current
- Wattage (W) is Amperage x Voltage
The standard USB port operates at about 2.5W. To fast charge, the device’s power brick wattage increases to 15+W.
Manufacturer increase the amperage and/or voltage to raise the wattage.
How Does Fast Charging Work?
Fast Charging has two phases.
Phase 1 is a blast voltage. Batteries absorb charge fast (up to about 80%) without severe long-term negative effects.
Phase 2 is a trickle charge. The charge speed slows down to allow the battery time to absorb the charge.
What is the Difference between Fast Charging, Dash Charge, and Quick Charge™?
Fast charging describes the process of charging your phone battery fast.
Quick Charge™ is the technology developed by Qualcomm® to fast charge phone batteries. Qualcomm® is a company that develops semiconductors, software, and services for wireless technology.
Dash Charge is the technology developed by OPPO to speed up the charging process. They do this by raising the amperage.
Do I Need Special Equipment for Fast Charging?
Depending on the device you have, you may need specific fast charging equipment.
USB-C Power Delivery (USB-C PD) is a fast charging technology used by Apple/iOS and some Android devices.
To fast charge using USB-C PD, you need a USB-C PD device, a USB-C charge cable, and a USB-C PD enabled wall charger.
USB-C connectors and USB-C PD work together. They handle the higher wattage without overheating or becoming damaged.
The chipset within the USB-PD detects the device to ensure that it delivers the right amount of power.
As mentioned, Quick Charge™ is a Qualcomm® technology. Qualcomm® owns patents critical to several mobile communications standards.
Each new Quick Charge™ generation is backwards compatible. This means it will work with older generations of Quick Charge™.
To charge fast, Quick Charge™ raises the voltage before raising the amperage a little. This can heat up the device.
Quick Charge™ fast charging wall chargers contain a unique power regulator. This allows them to regulate the higher voltage and amps without overheating.
What Is The Difference between The Raw Materials in a Fast Charging Wall Charger And An Ordinary Wall Charger?
ORDINARY WALL CHARGER
| MAIN COMPONENTS | PURPOSE | RAW MATERIALS |
| FLYBACK TRANSFORMER | CONVERTS HIGH VOLTAGE INPUT TO 5V OUTPUT | LAMINATED CORE – Silicon Steel or Ferrite INSULATED MATERIALS – MICA Insulation or Cellulose Insulation Paper WINDINGS – Copper |
| SWITCHING TRANSISTOR | OPENS AND CLOSES THE CIRCUIT | SILICA SAND |
| INDUCTOR | FILTERS THE AC INPUT | NICKEL, IRON & MOLYBDENUM |
| CAPACITORS | FILTERS THE AC OUTPUT & INPUT | CONDUCTIVE PLATES – Aluminium or Tantalum PAPER SOAKED IN ELECTROLYTE – Manganese Dioxide |
FAST CHARGING WALL CHARGER
| MAIN COMPONENTS | PURPOSE | RAW MATERIALS |
| SMART CHIPSET | INTELLIGENT POWER DISTRIBUTION | SILICA SAND, HYDROGEN PEROXIDE, SULFURIC ACID, DE-IONIZED WATER, HYDROFLUORIC ACID |
| FLYBACK TRANSFORMER | CONVERTS HIGH VOLTAGE INPUT TO 5V OUTPUT | LAMINATED CORE – Silicon Steel or Ferrite INSULATED MATERIALS – MICA Insulation or Cellulose Insulation Paper WINDINGS – Copper |
| SWITCHING TRANSISTOR | OPENS AND CLOSES THE CIRCUIT | SILICA SAND |
| INDUCTOR | FILTERS THE AC INPUT | NICKEL, IRON & MOLYBDENUM |
| CAPACITORS | FILTERS THE AC OUTPUT & INPUT | CONDUCTIVE PLATES – Aluminium or Tantalum PAPER SOAKED IN ELECTROLYTE – Manganese Dioxide |
Where Are The General Wall Charger Suppliers Located In China?
Most of the General Wall Charger Suppliers are in the province of Guangdong. The Pearl River Delta Economic Zone is in Guangdong.
The Pearl River Delta Economic Zone is a hub for Chinese high technology, foreign trade, and manufacturing.
What Qualifications Do Factories That Produce Fast Charging Wall Chargers Need?
There are a variety of qualifications and licenses to look out for. Those to consider include;
- CE – Conformité Européenne (French for European Conformity). This is a mandatory conformity mark for the European Economic Area
- UL – Underwriter Laboratories. A global, independent, safety science company that sets industry-wide standards
- FCC – Federal Communications Commission. An independent U.S. agency. Responsible for implementing and enforcing America’s communication law and regulations
- CB Scheme – Certification Body Scheme. An international program created by the International Electrotechnical Commission for Electrical Equipment (IECEE). It offers mutual recognition of test results.
- ISO 9001:2008 – an international standard. It specifies requirements for a Quality Management System
Further Directives/Regulations
- RoHS – a directive of CE marking. It is about using certain hazardous substances in electrical and electronic equipment.
- REACH – Registration, Evaluation, Authorization and Restriction of Chemicals. This is a European Union regulation. It addresses the production and use of chemical substances.
Brand Approvals
- MFI – provides access to Apple’s proprietary technologies and components. An MFI Licensee can manufacture accessories to Apple performance standards.
- Qualcomm® Quick Charge™ logo is on accessories that pass Qualcomm’s compliance process.
What Certifications Do You Need To Export Fast Charging Wall Chargers?
The Ministry of Commerce must recognize you as an exporter. When you have this, you can export electrical goods from China.
To be a foreign trade company, you must register with the local foreign trade department.
An Export License is also needed
Summary
At the start of this article, we described an American Customer. The customer did not check if the supplier could make good fast charging wall chargers. If he had, he could have saved a lot of time, money, and effort.
The American Customer prioritized a cheap price. He also did not know what to look for in a supplier. This caused problems for his business when the shipment had to be re-worked.
We hope that we have been able to give you some valuable information. And that it will help you choose a good supplier of fast charging wall chargers from China.