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Advanced USB Power Meter Voltage and Current Tester

$16.95

Monitor the performance of your USB power sources and charging cables with this convenient portable USB voltage and current tester. Designed to measure and display volts, amps, milliamp-hours (mAh), and time elapsed as power flows through your USB connection, this tool provides valuable insight into charging efficiency and device power requirements. With an easy-to-read LCD display and a straightforward plug-and-play operation, it enables real-time diagnostics for a variety of USB-powered devices, helping to identify possible issues with cables, chargers, or power banks.

Specifications

  • Measurement range: 3.0 V to 7.0V DC
  • Current range:<3.4A
  • Connectors: USB 2.0 Type A male to USB 2.0 Type A female
  • Display: Simultaneous voltage, current, mAh, and time
  • Application: USB power throughput testing and diagnostics
  • Dimensions: 72 x 23 x 13 mm

Features

  • Displays real-time voltage, current, milliamp-hours, and elapsed time
  • Helps assess the performance of USB chargers, power banks, and cables
  • Easy plug-and-play use between USB power source and device
  • Assists in identifying USB power supply and cable efficiency issues
  • Suitable for a wide range of USB-powered devices including phones and tablets
  • Clear LCD display for easy monitoring

Advanced Features:

  • Data Storage: Stores up to 10 groups of discharge capacity data for easy comparison
  • Voltage Alert: LCD backlight flashes when voltage is too high or too low—press button to silence for 30 seconds
  • Data Review: Double-click the button to cycle through stored data groups
  • Clear Function: Hold button to reset current data group and move to the next
  • USB Pass-Through: Full D+/D- communication support—device functions normally while testing

Important Notes About USB Power Testing:

  • Accuracy: This is a handy diagnostic tool, not a laboratory-grade measuring device.Readings are excellent for comparative testing in home/office use but may not achieve absolute precision.
  • Factors Affecting Readings: Actual power flow varies based on your device's battery level, cable quality/length, and the power source's safety features. Don't be alarmed by lower readings—they're normal.
  • Device Required for Current/mAh Readings: You must have a device connected and drawing power to view current (amps) and mAh readings.