3 in 1 Battery Tester Voltage Current Detector Mobile Power Voltage Current Meter USB Charger Doctor Single Output mAh Test Function


Tk 441
Tk 700
Tk 700
37% OFF
  • Brand new and high quality.
  • It can measure current and voltage of the power supply equipment with USB port.
  • Plug and play, no extra power supply needed.
  • The voltage and current will be displayed circularly.
  • Small sized, easy and convenient to carry.
  • Input USB
  • RTZ, Reset button, press it three seconds will Reset
  • Out USB
  • Voltage: 4V-20V ( 1% accuracy )
  • Current: 0-3A ( accuracy of 0.4% )
  • Battery Capacity (0-99999mah)
  • Working time (0-99Hour)
  • The working time and Capacity have Memory function when power off



  • Specification:1.Input USB2.RTZ, Reset button, press it three seconds will Reset3.Out USB4.Voltage: 4V-20V ( 1% accuracy )5.Current: 0-3A ( accuracy of 0.4% )6.Battery Capacity (0-99999mah)7.Working time (0-99Hour)8.The working time and Capacity have Memory function when power off

  • 9.Color:As the picture show

  • 10.Size: 7.3cm*2.3cm*1.35cm (LXWXH)

  • 11.Quantity:1 Pcs

  • 12.Net Weight: 25g






  • Brand new and high quality.
  • It can measure current and voltage of the power supply equipment with USB port.
  • Plug and play, no extra power supply needed.
  • The voltage and current will be displayed circularly.
  • Small sized, easy and convenient to carry.
  • Input USB
  • RTZ, Reset button, press it three seconds will Reset
  • Out USB
  • Voltage: 4V-20V ( 1% accuracy )
  • Current: 0-3A ( accuracy of 0.4% )
  • Battery Capacity (0-99999mah)
  • Working time (0-99Hour)
  • The working time and Capacity have Memory function when power off
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