1. Product Overview
The Syncwire USB C Car Charger is a high-performance charging solution designed for in-vehicle use. It features advanced charging technologies and safety mechanisms to provide efficient and secure power delivery to a wide range of portable electronic devices. This manual provides detailed instructions for the proper use and maintenance of your car charger.

Image 1.1: The Syncwire USB C Car Charger, showcasing its compact design, integrated coiled Type-C cable, and additional USB-A and Type-C ports.
2. Key Features
- Battery Leakage Prevention: Equipped with a unique on/off switch to control power flow, preventing unnecessary battery discharge when the car is idle. This feature helps conserve battery energy and prolong its lifespan.
- High-Speed Charging: Delivers up to 66W total output. Includes a built-in 30W Type-C coiled cable, a Type-C PPS PD 30W port, and a USB-A QC 36W port, supporting PD3.0/QC3.0 protocols for rapid charging of multiple devices simultaneously.
- Enhanced Safety Protections: Features an intelligent power management chip and holds UL, CE, FCC, and RoHS certifications. Incorporates comprehensive protections against overcurrent, overvoltage, overload, overheating, and short circuits, ensuring device and vehicle safety.
- Wide Compatibility: Compatible with a broad range of devices including iPhone 16/15/15 Pro Max, Samsung Galaxy S23/S22/S21/Note series, Google Pixel phones, iPad Pro/Air, sports watches, car recorders, cameras, and other USB-powered devices. Supports 12-24V vehicles (cars, SUVs, trucks).
- Integrated Coiled Cable: Comes with a built-in 6-foot (1.8m) USB C coiled cable for convenience and tangle-free storage.

Image 2.1: Illustration of the special switch design, highlighting its functions for battery protection and charging control.

Image 2.2: Visual representation of the charger's ability to fast-charge three devices concurrently, demonstrating its 66W maximum output.
3. Setup and Installation
- Locate Vehicle Power Outlet: Identify a 12V-24V cigarette lighter socket or power outlet in your vehicle. Ensure the outlet is clean and free of debris.
- Insert the Charger: Firmly insert the Syncwire car charger into the vehicle's power outlet. Push until it is securely seated. The charger's indicator light should illuminate, indicating it is receiving power.
- Connect Devices:
- For devices with a USB-C port, use the built-in coiled Type-C cable.
- For additional devices, connect your own USB-C cable to the PD3.0 (30W) port or a USB-A cable to the QC3.0 (36W) port.
- Activate/Deactivate Charging: Use the integrated on/off switch on the charger to control power delivery to your connected devices. Press the switch to turn charging on or off as needed. This helps prevent battery drain when the vehicle is off.

Image 3.1: Demonstration of the unique ON/OFF switch for controlling charging, illustrating its function to prevent battery leakage.
4. Operating Instructions
Once installed, the Syncwire car charger operates automatically to detect and deliver optimal charging current to your connected devices. Follow these guidelines for best performance:
- Simultaneous Charging: The charger supports charging up to three devices concurrently. The total output is dynamically distributed based on the connected devices' power requirements.
- Fast Charging Protocols: Ensure your device supports PD3.0 or QC3.0 for the fastest charging speeds. The charger will automatically adjust to the maximum supported charging rate of your device.
- Coiled Cable Usage: The built-in coiled cable can extend up to 6 feet (1.8 meters), providing flexibility for device placement within the vehicle. Allow the cable to retract naturally when not in use to maintain its shape and prevent tangles.

Image 4.1: Depiction of the flexible Type-C spring cable in use, demonstrating its extended reach for convenient charging.
5. Compatibility
The Syncwire USB C Car Charger is designed for broad compatibility with various devices and vehicles:
5.1 Compatible Devices:
- Smartphones: iPhone 16/15/15 Pro Max, iPhone 14/13/12/11/10/XR/XS, Samsung Galaxy S23/S22/S21/S20/Note 20/10/A52/A71/A51, Google Pixel 6 pro/6/5, and other USB-C and USB-A compatible Android phones (TCL, Xiaomi, Lenovo, Motorola, HUAWEI, SONY, HTC, Xperia, Nokia, Nexus, LG, MOTO).
- Tablets: iPad Pro/Air, iPad mini.
- Other Devices: Sports watches, car recorders, cameras, headphones, game consoles, and other USB-powered devices.
5.2 Compatible Vehicles:
- Supports 12V-24V power outlets found in most cars, SUVs, trucks, and other vehicles.

Image 5.1: Comprehensive compatibility chart for the Syncwire car charger, detailing supported devices for both USB-A and Type-C outputs.
6. Safety and Protection
Your Syncwire car charger is built with multiple layers of protection to ensure the safety of your devices and vehicle. It adheres to strict quality and safety standards, holding UL, CE, FCC, and RoHS certifications.
6.1 Integrated Protection Features:
- Overcurrent Protection: Prevents damage from excessive current flow.
- Overvoltage Protection: Safeguards against voltage surges.
- Overload Protection: Protects against drawing too much power.
- Overheating Protection: Monitors and regulates internal temperature to prevent overheating.
- Short Circuit Protection: Automatically cuts off power in case of a short circuit.

Image 6.1: Visual representation of the professional certifications and comprehensive safety protections integrated into the car charger.
7. Specifications
| Feature | Detail |
|---|---|
| Model Number | SW-XC778 |
| Input Voltage | 12-24 Volts DC |
| Total USB Ports | 1 (built-in Type-C coiled cable) + 2 (USB-A, Type-C ports) |
| Output (Built-in Type-C Coiled Cable) | 30W (PD3.0) |
| Output (Type-C Port) | 30W (PPS PD3.0) |
| Output (USB-A Port) | 36W (QC3.0) |
| Maximum Total Output | 66W |
| Coiled Cable Length | 6 feet (1.8 meters) max stretch |
| Item Weight | 3.17 ounces |
| Package Dimensions | 4.84 x 2.83 x 1.77 inches |
| Color | Black |
| Certifications | UL, CE, FCC, RoHS |
8. Maintenance and Care
To ensure the longevity and optimal performance of your Syncwire car charger, follow these maintenance tips:
- Cleaning: Use a soft, dry cloth to clean the exterior of the charger. Do not use liquid cleaners or aerosols.
- Storage: When not in use, store the charger in a cool, dry place, away from direct sunlight and extreme temperatures.
- Cable Care: Avoid excessive stretching or sharp bending of the coiled cable to prevent internal damage. Allow it to retract naturally.
- Power Outlet: Ensure the vehicle's power outlet is clean and free of debris before inserting the charger to maintain a good connection.
- Avoid Liquids: Do not expose the charger to water or other liquids.
9. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger indicator light is off / No power |
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| Device not charging or charging slowly |
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| Charger feels warm during use |
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10. Warranty and Support
Syncwire stands behind the quality of its products. Your Syncwire USB C Car Charger comes with a comprehensive warranty and dedicated customer support.
- 36-Month Assurance: We offer a generous 36-month assurance period, guaranteeing the quality and performance of your product.
- Professional After-Sales Support: Should you have any inquiries, concerns, or require assistance with your product, our professional after-sales support team is available to help.
For support, please visit the official Syncwire website or contact their customer service directly through the contact information provided on their packaging or website.
You can also visit the SYNCWIRE Store on Amazon for more information and product registration.



