1. Introduction
The Jarhead KWS-066C Type-C Tester is a compact and versatile digital monitor designed for real-time detection of voltage, current, power, and other charging parameters for USB Type-C devices. It supports various fast charging protocols, including QC2.0, QC3.0, PD, and VOOC, making it an essential tool for evaluating chargers, mobile power supplies, and other charging equipment. Its plug-and-play design eliminates the need for complex wiring, offering precise measurements and convenient data storage with power-off saving capabilities.
2. Safety Information
- Do not expose the device to extreme temperatures, direct sunlight, or high humidity.
- Avoid dropping or subjecting the device to strong impacts.
- Keep out of reach of children.
- Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage or injury.
- Ensure proper ventilation when in use to prevent overheating.
3. Package Contents
- 1 x KWS-066C Type-C Tester
- (No additional accessories are typically included or required for basic operation)
4. Product Overview
The KWS-066C Type-C Tester features a compact design with a digital color screen for clear display of measurement data. It includes a Type-C male connector for input and a Type-C female port for output, allowing for two-way testing.
Figure 4.1: KWS-066C Type-C Tester (Black Model)
Figure 4.2: KWS-066C Type-C Tester (White Model)
Figure 4.3: KWS-066C Type-C Tester Display
The color screen provides real-time readings for:
- Voltage (V)
- Current (A)
- Power (W)
- MAH (milliampere-hour)
- MWH (milliwatt-hour)
- Timing (hours)
- Charging Resistance (ohms)
- Ambient Temperature (C)
5. Setup
The KWS-066C Type-C Tester is designed for simple plug-and-play operation. No special drivers or software installation is required.
- Identify your power source (e.g., wall charger, power bank) and the device you wish to test (e.g., smartphone, tablet).
- Connect the male Type-C connector of the KWS-066C tester directly into the Type-C output port of your power source.
- Connect your device's charging cable into the female Type-C input port on the KWS-066C tester.
- Ensure all connections are secure. The tester's screen will illuminate and begin displaying real-time data.
Figure 5.1: KWS-066C Tester in use, demonstrating connection points.
6. Operating Instructions
Once connected, the KWS-066C tester automatically begins monitoring the charging process. The color screen displays various parameters simultaneously.
6.1 Real-time Monitoring
The tester provides instant readings of:
- Voltage (V): The electrical potential difference.
- Current (A): The flow rate of electric charge.
- Power (W): The rate at which electrical energy is transferred.
- MAH (milliampere-hour): Accumulated charge capacity.
- MWH (milliwatt-hour): Accumulated energy capacity.
- Timing (H): Duration of the charging session.
- Charging Resistance (Ω): Calculated resistance of the charging circuit.
- Ambient Temperature (°C): Internal temperature reading of the device.
6.2 Fast Charging Protocol Identification
The KWS-066C automatically identifies and displays the active fast charging protocol (QC2.0, QC3.0, PD, VOOC) if supported by the connected charger and device. This feature helps verify if your fast charger is working as expected.
6.3 Data Storage and Power-off Saving
The device saves multiple sets of detection data, allowing users to store and compare charging performance over time. The power-off saving function ensures that your collected data is retained even after the device is disconnected from power, without affecting data transmission during active use.
Video 6.1: Demonstration of KWS-066C Type-C Tester in operation, showing real-time data display.
7. Specifications
| Feature | Specification |
|---|---|
| Model Number | KWS-066C |
| Brand Name | Jarhead |
| DIY Supplies | Electrical |
| Dimensions | 60*26*15 (mm) |
| Max Operating Temperature | 60 (°C) |
| Power Supply | DC |
| Display Type | Digital Only (Color Screen) |
| Function | Voltage and current detector |
| Measuring Range (Input/Output Voltage) | 4-30V |
| Input/Output Current | 0-6.5A |
| Power | 0-195 watts |
| Voltage Measurement Error | 1-2% |
| Timing Range | 0-99 hours |
| MAH (milliampere-hour) Range | 0-999999MAH |
| MWH (milliwatt-hour) Range | 0-999999MWH |
| Charging Resistance Range | 0-999 ohms |
| Certification | CE |
| Origin | Mainland China |
| Battery Included | No |
| High-concerned chemical | None |
8. Maintenance
- Cleaning: Use a soft, dry cloth to clean the device. Do not use liquid cleaners or solvents.
- Storage: Store the tester in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Handle the device with care to avoid physical damage to the screen or connectors.
9. Troubleshooting
If you encounter issues with your KWS-066C Type-C Tester, please refer to the following common troubleshooting steps:
- No Display: Ensure the tester is securely connected to a working power source and a device. Check if the power source is active.
- Inaccurate Readings: Verify that both the power source and the connected device are functioning correctly. Ensure the cables used are not damaged.
- Fast Charging Not Detected: Confirm that both your charger and the device being charged support one of the listed fast charging protocols (QC2.0, QC3.0, PD, VOOC). Some cables may not support fast charging data transfer.
10. User Tips
- Use the timing function to monitor the total charging duration for your devices.
- Compare MAH and MWH readings over time to assess battery health or charger efficiency.
- The compact size makes it ideal for travel or carrying in a toolkit for on-the-go testing.
11. Warranty and Support
For warranty information or technical support, please refer to the seller's policies or contact the manufacturer directly. Keep your purchase receipt as proof of purchase.