1. Introduction
The KOWSI USB C Meter Current Tester (Model KWS-2301C) is a compact and versatile device designed to monitor the charging performance of USB-C compatible devices. It accurately displays key electrical parameters such as voltage, current, power, and accumulated capacity, helping users assess charging efficiency and diagnose potential issues. Its bidirectional current test function, offline record access, and power failure protection features make it an essential tool for anyone frequently charging or testing USB-C devices.
2. Safety Information
- Do not expose the device to moisture or extreme temperatures.
- Avoid dropping or subjecting the device to strong impacts.
- Do not attempt to disassemble or modify the device, as this will void the warranty and may cause damage or injury.
- Ensure proper connection to compatible USB-C ports to prevent damage to the tester or connected devices.
- Keep out of reach of children.
3. Product Overview
The KOWSI USB C Meter Current Tester features a clear display and a durable CNC metal shell for dust and fall prevention. It is designed for convenient monitoring of USB-C power delivery.
4. Specifications
| Feature | Specification |
|---|---|
| Model Number | KWS-2301C |
| Material | ABS, CNC Metal Shell |
| Voltage Range | DC 4-30V |
| Current Range | 0-12A |
| Power Range | 0-360W |
| Capacity Range | 0-99999MAh |
| Count Time | 0-99 Hours |
| Size (Approx.) | 38 x 16.5 x 9 mm (1.50 x 0.65 x 0.35 in) |
| Certification | CE, RoHS |
| Battery Included | No |
5. Setup
The KOWSI USB C Meter Current Tester is designed for plug-and-play operation. Follow these steps to set up and begin monitoring:
- Identify Ports: The tester has a male USB-C connector on one end and a female USB-C port on the other.
- Connect to Power Source: Plug the male USB-C connector of the tester into your USB-C power adapter or power bank.
- Connect Device: Plug your USB-C charging cable into the female USB-C port of the tester. Then, connect the other end of the charging cable to your device (e.g., smartphone, tablet, laptop).
- Power On: Once connected, the tester's display will automatically light up and begin showing real-time charging data.
6. Operating Instructions
The KWS-2301C provides real-time data and features for comprehensive charging analysis.
6.1 Display Readings
The display shows the following parameters:
- Voltage (V): The current voltage being delivered.
- Current (A): The current amperage being drawn by the device.
- Power (W): The real-time power consumption (Voltage x Current).
- Count Time (HH:MM:SS): The duration of the current charging session.
- Capacity (MAh): The accumulated milliamp-hours delivered during the session.
6.2 Bidirectional Current Test Function
The tester supports bidirectional current testing, meaning it can measure current flow regardless of the direction, ensuring accurate readings for various USB-C setups.
6.3 Offline Record Access & Power Failure Protection
The device supports offline record access, allowing you to review past charging data. It also features power failure protection, which helps preserve recorded data even if power is interrupted.
6.4 Display Orientation
The display can be viewed in two directions for convenience. If the display is upside down, simply rotate the tester 180 degrees, and the display will adjust accordingly.
7. User Tips
- To get the most accurate readings, ensure all connections are firm and secure.
- Use the capacity (MAh) reading to estimate the actual capacity of your device's battery or power bank over a full charge cycle.
- Compare readings from different chargers and cables to identify the most efficient charging accessories.
- Monitor power (W) to confirm if your device is receiving fast charging or power delivery as expected.
8. Troubleshooting
- No Display: Ensure the tester is properly connected between a powered USB-C source and a device. Check if the power source is active and the device is drawing power.
- Inaccurate Readings: Try using a different USB-C cable or power adapter. Ensure the connected device is functioning correctly.
- Intermittent Connection: Check for loose connections. Ensure the USB-C ports on all devices are clean and free of debris.
- Device Not Charging: If the tester shows no current, verify that the power source and charging cable are working independently. The tester itself should not prevent charging if properly connected.
9. Maintenance
- Clean the device with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Keep the USB-C connectors free from dust and debris.
- Store the tester in a cool, dry place when not in use.
10. Warranty and Support
This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For warranty claims or technical support, please contact the retailer or manufacturer directly. Please retain your proof of purchase for warranty service.
