KWS-V21 USB Current Voltage Tester QC2.0 USB Power Meter USB Multimeter for Charger Diagnostics

Never wonder if your charger or USB device is performing properly again. The KWS-V21 is a reliable USB current voltage tester that gives you real-time charging data, helping you monitor voltage, current, charging time, and battery capacity with ease. Designed for tech enthusiasts, repair professionals, and everyday users, this USB power meter supports QC2.0 fast charging detection while remaining simple to use with a plug-and-play design. Its clear LCD display, automatic data storage, and precise measurements make it an essential tool for safer and smarter charging.

Key Features

• Measures voltage, current, charging time, and accumulated capacity on a bright LCD display.
• Supports QC2.0 fast charging detection for compatible USB devices.
• Automatically saves measurement data after power loss and allows quick reset with a single button.
• Plug-and-play operation with no battery or power switch required.
• Compatible with USB 2.0 devices including chargers, power banks, laptops, tablets, desktop PCs, and car chargers.
• Measuring range: 3.5V-20V with 0.01V, 0.01A, and 1mAh resolution.
  
  

Why Choose Our KWS-V21 USB Current Voltage Tester QC2.0 USB Power Meter USB Multimeter for Charger Diagnostics

Unlike basic charging indicators that only show power status, this USB multimeter provides detailed real-time charging information and stores your data even after unplugging. QC2.0 compatibility, accurate readings, and one-button reset make it a practical choice for diagnosing charging issues, testing cables, and monitoring USB-powered devices.

Perfect For

• Testing USB chargers and charging cables
• Monitoring phone and tablet charging
• Checking power banks and car chargers
• Repair technicians and electronics hobbyists
• Home, office, workshop, and travel use
  
  

Know Your Charging Performance with Confidence

Order the KWS-V21 today and enjoy accurate charging measurements that help protect your devices and keep every USB connection performing at its best.