Kowsi KWS-2302C USB-C Tester – Monitor your charger performance in real-time
Is your charging cable underperforming? Unsure if your power bank actually delivers the capacity promised on the box? Or perhaps you want to verify if your charger is correctly triggering the PD protocol on your phone. The Kowsi KWS-2302C USB-C Tester provides clear, accurate answers—voltage, current, power, and real-time capacity, all displayed on a vibrant colour screen.
Note: This device operates exclusively via USB Type-C ports and does not include a power adapter. Do not connect loads exceeding 12A continuously through the internal terminal of the tester.
Why choose this model? (Key Advantages):
- Colour TFT LCD Display — Highly readable, even in direct sunlight, showing all parameters simultaneously without the need to toggle through menus.
- 12A Maximum Current — Easily handles SuperVOOC, SCP, and virtually every other high-speed charging standard currently on the market.
- 13 Fast Charging Protocols — Automatically detects and displays PD2.0, PD3.0, PPS, QC2.0, QC3.0, FCP, SCP, AFC, PE, DASH, VOOC, and SuperVOOC.
- Bidirectional Current Testing — Detects both charging and discharging, which is essential for diagnosing power banks with pass-through charging.
- Real Capacity in mAh and mWh — Discover the true storage capacity of your power bank, rather than relying on the manufacturer’s label.
- Plug-and-Play — No extra cables required; it inserts directly between your charger and device in under 5 seconds.
- Precision Accuracy ±(1%+5 digits) — Reliable data for both curious tech enthusiasts and professionals diagnosing equipment.
Performance and Technical Details
The high-current terminal of the KWS-2302C supports up to 12A continuous, placing it well above most standard testers that cap out at 5–6A. The bidirectional current detection shows you instantly whether energy is flowing to or from your device—invaluable when testing power banks with pass-through functionality. Full compatibility with PPS and PD3.0 protocols ensures the tester correctly negotiates variable voltage without interfering with the communication between your charger and phone.
| Parameter | Value / Detail |
|---|---|
| Model | KWS-2302C |
| Manufacturer | Kowsi |
| Voltage Measurement Range | 4V – 30V |
| Current Measurement Range | 0A – 12A |
| Accuracy | ±(1% + 5 digits) |
| Display Type | TFT Colour LCD |
| Power Source | USB Type-C |
| Port Types | Type-C Input + Type-C Output |
| Current Direction | Bidirectional |
| Supported Protocols | PD2.0, PD3.0, PPS, QC2.0, QC3.0, FCP, SCP, AFC, PE, DASH, VOOC, SuperVOOC |
| Measurement Functions | Voltage, Current, Power, Capacity (mAh/mWh), Time |
| Applications | Testing chargers, power banks, USB-C cables, 3C devices |
Programming and Usage Instructions
- Connect the Type-C input port of the tester to your power source (charger, laptop USB port, etc.).
- Connect your device (smartphone, power bank, accessory) to the Type-C output port.
- The TFT colour display will power on automatically, showing real-time voltage (V), current (A), and power (W).
- To measure power bank capacity: start the discharge session and monitor the accumulated mAh/mWh on the screen until the source is depleted.
- Press the control button to navigate between screens for additional information (time, total accumulated energy, etc.).
- To reset the capacity or energy counter, press and hold the function button as directed in the included manual.
Package Contents
- 1x Kowsi KWS-2302C USB-C Tester
Frequently Asked Questions
Does it work with any USB-C cable?
Yes, it works with any standard USB-C cable. For currents exceeding 5A, please use an E-Marker certified cable; otherwise, the cable itself may become the bottleneck rather than the charger.
Does it display power in Watts, or just voltage and current?
Yes. The KWS-2302C automatically calculates power (W) from the measured voltage and current and displays it in real-time on the colour screen.
Can I use it to check if a USB-C cable supports fast charging?
Yes. If the QC or PD protocol is successfully negotiated, you will see the corresponding voltage and current on the screen. A low-quality cable will block this negotiation, and you will remain at standard 5V/0.5A values.
Is it compatible with Apple USB-C chargers (MacBook, iPad Pro)?
Yes, any charger with a USB-C port works, including Apple PD chargers. It is not compatible with Lightning or MagSafe magnetic ports—only USB Type-C.
Can I leave the tester connected for hours?
Yes, it is designed for continuous monitoring. However, avoid sustained currents near the 12A limit for very long periods and ensure adequate ventilation around the device.
Product Video
Photo Gallery
Reviews
There are no reviews yet.