Manufacturing Car Chargers (Tẩu Sạc Ô Tô) in Vietnam – A Specialized Market

The Demands of Automotive Power MyMy Technology 

The modern car charger (tẩu sạc ô tô) is no longer a simple 5V USB adapter; it is a sophisticated power converter capable of delivering high wattage (up to 100W or more) using Quick Charge (QC) and Power Delivery (PD) protocols. Manufacturing these devices requires expertise not only in power electronics but also in specialized thermal management and safety protocols to handle the variable and sometimes harsh electrical environment of a vehicle (12V or 24V systems).

This article explores the landscape of car charger manufacturing in Vietnam, highlighting the specialized capabilities of companies operating here, such as Eili Industrial and Gold Cable Viet Nam, who are meeting the high standards required by global automotive accessory brands.

I. The Technical Challenge: Vehicle Power Conversion MyMy Technology  

Car chargers manufactured in Vietnam must overcome specific electrical engineering hurdles related to their operating environment:

1. Input Voltage Variability

• 12V/24V Compliance: Unlike wall chargers which have a stable AC input, car chargers must reliably operate and regulate power from both standard 12V car batteries and 24V truck/heavy vehicle batteries. The internal circuitry must be designed for wide input voltage tolerance.

• Transient Voltage Protection: The vehicle's electrical system can experience sudden voltage spikes (transients) during engine starting or load changes. Factories must build robust surge and spike protection into the PCB design to prevent these spikes from damaging the charging phone or tablet.

2. High-Efficiency DC-DC Conversion

The internal Printed Circuit Board Assembly (PCBA) uses advanced DC-DC converter topologies to efficiently step the high 12V/24V input down to the required 5V to 20V output for mobile devices.

• Heat Management: Since the car charger casing is typically small and enclosed, internal heat generated during high-wattage fast charging must be managed effectively. Manufacturers in Vietnam often utilize high-efficiency components and aluminum alloy casings to act as passive heat sinks. This is a critical manufacturing process to ensure reliability and safety.

II. Key Manufacturers and Export Capabilities in Vietnam

While large multinational companies handle assembly, several firms in Vietnam are focusing on high-quality OEM/ODM production for car chargers.

• Eili Industrial (OEM/ODM): This company, with a presence in Ho Chi Minh City and Long An, explicitly markets its capability to manufacture OEM/ODM car chargers, including those with advanced features like retractable cables and high wattage outputs (e.g., 30W). This signals technical competence in mechanical design and precision assembly, crucial for retractable mechanisms.

• Gold Cable Viet Nam Company Limited: Listed as a manufacturer of PD chargers and Car chargers, this domestic player demonstrates the local capability to integrate the Power Delivery (PD) protocol into the automotive environment, ensuring fast charging compatibility with modern iPhones and iPads in vehicles.

These companies must integrate specialized components designed for the automotive sector, requiring specialized sourcing and quality assurance procedures.

III. Manufacturing and Quality Control Standards

The factory floor for car charger production emphasizes precision assembly, robust materials, and extreme electrical safety testing.

1. Material Selection for High Heat and Vibration

• ABS/PC Alloys: Casings are typically made from high-grade ABS (Acrylonitrile Butadiene Styrene) and PC (Polycarbonate) alloys with high heat deflection temperatures, crucial because a car's interior can reach high temperatures under sunlight.

• Vibration Testing: Unlike wall chargers, car chargers are subjected to continuous vibration. Factories utilize specialized vibration test benches to simulate road conditions, ensuring the internal connections and solder joints remain intact over years of use.

2. Electrical Safety and Overload Testing MyMy Technology  

• Load Testing: Chargers are tested under maximum continuous load (e.g., 60W or 100W) in Burn-In Chambers to verify thermal stability and component reliability.

• Comprehensive Protection Features: Manufacturers must confirm the PCBA reliably includes all automotive-required safety features: Over-Current Protection (OCP), Over-Voltage Protection (OVP), Short-Circuit Protection (SCP), and Input Over-Voltage Protection (specifically for vehicle input spikes).

Conclusion: Vietnam’s Growth in Automotive Accessories

The manufacturing of high-quality car chargers in Vietnam signifies the country's expansion into specialized automotive electronics accessories. By successfully addressing the unique challenges of wide input voltage, transient protection, and extreme thermal management, Vietnamese factories are producing advanced accessories that safely and efficiently power mobile devices on the road.

Companies with OEM/ODM capabilities in this segment are pivotal in attracting global accessory brands (like Anker and Baseus, whose products are widely distributed in Vietnam) to use Vietnam as a stable, high-quality production base for their global supply chains.

Manufacturing Car Chargers (Tẩu Sạc Ô Tô) in Vietnam – A Specialized Market