KWS-V20 USB Voltage Current and Capacity Tester 20V 3A

The KWS-V20 USB Voltage Current and Capacity Tester is an essential diagnostic tool for makers, students, and hardware engineers to monitor the performance of USB power sources. This compact, plug-and-play device simultaneously displays real-time voltage, current, active capacity (mAh), and elapsed time on its clear LCD screen. It is designed to help you troubleshoot USB ports, evaluate the quality of USB cables, and measure the actual capacity of power banks and lithium-ion batteries.

This tester is highly compatible with a wide range of devices, including smartphone chargers, power banks, Raspberry Pi power supplies, and Arduino USB inputs. With its built-in non-volatile memory, the KWS-V20 retains its accumulated capacity and time data even after being powered off, allowing you to run long-term discharge tests without losing progress. A dedicated physical reset button lets you clear the recorded data instantly for your next measurement.

Features:

• Real-Time Monitoring: Simultaneously displays voltage, current, capacity, and timing data.
• Wide Voltage Range: Supports measurement from 3V to 20V DC, making it compatible with standard USB and Quick Charge protocols.
• High Current Capacity: Measures current up to 3A with high precision.
• Data Retention: Automatically saves capacity (mAh) and time data when powered off.
• Easy Reset: Features a physical reset button to clear accumulated data easily.
• No External Power Required: Draws power directly from the USB port under test.

Package Includes:

1 x KWS-V20 USB Voltage Current and Capacity Tester