Keweisi USB Voltage and Current Tester (IN/OUT)

  • USB Voltage and Current Tester Kit.
  • Monitor how well your phone and tablet are charging, as well as your device's current and voltage consumption.
  • LCD display shows the charging voltage and current between your mobile device, charge cable and charger.
  • Fast charging capabilities for Apple and Android devices.
  • LED light indicates whether the voltage (V) is being displayed or the current (A) is being displayed.
  • Secure charging with public USB ports or when charging with unknown devices.