The USB Voltage and Current Meter is a diagnostic kit that allows you to troubleshoot and diagnose the problems you encounter while charging. It can monitor how well your devices are charging and your devices' current and voltage consumption. The LED display shows the voltage and current between your device, charging cable and charger. 
  • USB Current Voltage Tester
  • Bright easy-to-read LED display
  • Voltage Measuring range: DC 3V - 9V
  • Current Measuring range: 0-3A (error: ± 1%), 5A biggest support
  • Colour: Black


1. Plug the USB into a charger or an adapter. The display will light up and shows the amount of voltage it is receiving from the charger. 

2. Connect your device and the charging cable to either of the output. The display will start to change the values for current and voltage. 

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