Vietnamese Car Inverter 150W Modified Wave Inverter: Top-Selling Online Store Product

I. Client Background

Client Pham is a prominent cross-border e-commerce seller in Vietnam, specializing in automotive electronics and outdoor gear. With multiple stores on platforms like Shopee and Lazada, they have amassed over 100,000 followers. Market research reveals: Vietnam's vehicle ownership is growing annually, with car owners frequently commuting daily and camping outdoors on weekends. However, traditional car chargers only support low-power devices, failing to meet demands like laptop work, car refrigerator cooling, or small projector playback. Existing car inverters on the market are either prohibitively expensive (imported brands priced over 300 yuan each) or suffer from issues like unstable output and inadequate safety protection, resulting in high consumer complaint rates. Core Client Requirements: 150W modified sine wave car inverter Unit price capped at ¥30 Supports USB + AC dual interfaces Compatible with 12V automotive power Includes basic safety protections Complies with Vietnamese market certification standards Enables rapid supply to meet e-commerce platform sales cycles

II. Collaboration Process

Requirement Alignment: The client approached us via a cross-border e-commerce supply chain platform, specifying product power, interface configuration, budget, and certification requirements. We provided a product proposal and quotation within 24 hours.
Sample Customization: Optimized product design based on Vietnamese driver habits (reduced dimensions to 12cm×8cm×5cm for compact car storage), added USB fast-charging port (5V/2.4A), and shipped 2 samples for client testing;
Testing & Certification: The client completed load testing with the samples (stable power supply for a phone, laptop, and car refrigerator simultaneously). We assisted in obtaining CE and FCC certifications to ensure the product meets Vietnamese import standards.
Batch Production & Stocking: The client placed an initial order of 1,000 units. We completed production and shipped within 7 days, collaborating with the client on product photography and detail page creation before platform listing.
Ongoing Partnership: Post-launch sales grew steadily. The client adjusted order volumes based on sales data. We established a dedicated replenishment channel, guaranteeing a 48-hour response to restocking requests. The partnership has now lasted 12 months, with cumulative shipments reaching 5,000 units.

III. Product Details and Technical Specifications

Core Design: Compact structure weighing only 200g, featuring a non-slip base and vehicle cigarette lighter plug for plug-and-play operation without occupying interior space.
Interface Configuration: 1 AC standard socket (220V AC) + 2 USB fast-charging ports (5V/2.4A), supporting simultaneous power supply for multiple devices to meet daily office, entertainment, and travel needs.
Safety Protection: Features overcurrent, short-circuit, over-temperature, and reverse-polarity protection. Built-in fuse automatically cuts power during anomalies to prevent damage to vehicle circuits and connected devices.
High Compatibility: Input voltage 12V DC (compatible with 10.5V-15V wide voltage range). Suitable for most vehicle types including sedans, SUVs, and vans. Modified sine wave output accommodates most non-precision electronics.
Technical Specifications: Rated Power: 150W Peak Power: 300W Output Voltage: 220V AC ±10% Frequency: 50Hz ±1Hz Conversion Efficiency: ≥88% Standby Power Consumption: <1W

IV. Market Feedback & Customer Reviews

1. Sales Data

Sold over 500 units in the first month after launch, stabilizing at 1,000+ units monthly within 3 months. Ranked among the top 3 best-selling car inverters on Shopee and Lazada.

Achieved a 92% positive review rate and 35% repurchase rate, with many customers buying a second unit for home backup or gifting to friends and family.
Drives a 20% overall sales increase in the customer's store's car electronics category, with over 30,000 new store followers.

2. Customer Reviews (Translated from Vietnamese platform comments)

“Exceptional value for money! The 150W power easily powers my laptop and car fridge. It's incredibly practical for weekend camping trips. Multiple ports, fast charging, and a compact size that doesn't take up much space.” — — Buyer Nguyen
“After 3 months of use, never experienced power cuts or overheating. Fits securely in the cigarette lighter socket. Costs half the price of imported brands. Highly recommended for anyone needing in-car power.” — — Buyer Tran
“Seller shipped quickly with secure packaging, included a storage bag and manual. Operation is simple—I use it to charge phones and tablets, occasionally powering a small printer. Fully meets daily needs.” — Buyer Le

3. Customer Collaboration Feedback

“Collaborating with this factory has been exceptionally smooth. They not only respond swiftly to custom requests but also maintain tight cost control, giving our products a strong price advantage in the Vietnamese market. Product quality is consistent, post-sales issues are rare, and restocking is prompt—perfectly aligned with e-commerce sales cycles. This 150W car inverter has become our store’s top-selling item, and we plan to co-develop higher-wattage car inverters next.” — Client Pham

4. Case Study Image

Actual Product Photos of Car Inverter (Showing Interfaces, Dimensions, and Cigarette Lighter Plug):

Diagram of in-vehicle usage scenarios for connecting laptops, mobile phones, and car refrigerators via an inverter:

Screenshots of e-commerce platform sales data (sales volume, positive review rate) and customer store backend order images: