The KEWEISI KWS-V30 digital USB tester lets you monitor the charging process and measure voltage, current, power, charging time and transferred capacity. It features a colour IPS display and supports measurement ranges of 4–30 V and 0–6.5 A. Suitable for testing USB chargers, cables and charging devices.

KEWEISI KWS-V30 – digital USB tester with colour IPS display

The KEWEISI KWS-V30 USB tester is a practical measuring tool for checking charging adapters, USB cables, power banks and mobile devices. Once connected to a USB port, it displays current electrical parameters and allows you to monitor the charging process as well as the amount of energy delivered to the connected device.

The colour IPS display presents measured values clearly and offers a wide viewing angle. Using the control button, you can switch between individual readings, including voltage, current, power, charging time and transferred capacity. The device also features a function for saving measured data.

The tester supports QC 3.0 and VOOC/SuperVOOC fast-charging protocols. Achieving a specific charging power depends on the compatibility of the charger, cable and connected device.

Main features:

• Real-time measurement of voltage, current and power

• Charging time display

• Measurement of transferred capacity in mAh and energy in Wh

• Colour IPS display with a wide viewing angle

• Support for QC 3.0 and VOOC/SuperVOOC

• Measured data saving function

• Compact design for service workshops and everyday use

Technical specifications:

• Brand: KEWEISI

• Model: KWS-V30

• Voltage range: DC 4–30 V

• Current range: 0–6.5 A

• Minimum measurable current: 0.02 A

• Power range: 0–195 W

• Capacity: 0–99,999 mAh

• Energy: 0–999 Wh

• Timer: 0–990 hours

• Display: colour IPS

• Dimensions: 60 × 26 × 13 mm

• Weight: approx. 25 g

Note: The maximum measurement values do not guarantee support for every fast-charging protocol or achieving the stated power. The result depends on the characteristics of the entire charging chain.