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USB Tester, 9/10 In 1 DC, 4-30V, Digital Monitor, Cut-off Power

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  • 9 in 19 in 1

USB tester online


  • Brand Name: JUANJUAN
  • DIY Supplies: Electrical
  • Display Type: Digital
  • Dimensions: Normal
  • Power Supply: DC
  • Operating Temperature: Normal
  • Accuracy Class: Normal

Details: (USB tester online)

9 in 1 DC USB Tester

  • Time cut-off power supply
  • Resistance: 0-999.99Ω
  • Power: 0-150W
  • Voltage and current: DC4-30V; 0-5A
  • Timing, Delay: 0-99 hours; 0-24 hours (USB tester online)
  • Voltage over-current protection range: 30V / 5A
  • Monitoring Content: USB voltage, current, power, timing, and other data
  • Electrical Energy: 0-999.9WH

10 in 1 Multifunction USB

  • Current: 0-5A 2. Voltage: 4-30V
  • Timing: 0-99 hours
  • Power : 0-150W
  • Capacity: 0-999999mAh
  • Inner temperature: 0-80 C  (USB tester online)
  • Divide into groups: 0-9 group
  • Charging resistance: 0-999.9 Ω
  • Positive voltage: 0-10V
  • Negative voltage: 0-10V

Directions for use:

  • Click the button to view 1-9 sets of charging data.
  • Long press the button for 3 seconds to remove a set of
    charging data. (USB tester online)
  • Double-click the button to rotate the screen to view.

Check out another USB tester too!


Easy to use:

  • Click the button once check to save packet data (Time, Wh, mAh). Long press button for 3 seconds to clear the current single set of saved data (Time, Wh, mAh).
  • The IN-input connects to the output port of the charger.
  • The reset-clear key, press 3-5 seconds to clear the screen. (USB tester online)
  • OUT-output connected to the USB port of the data cable.
  • Battery capacity display window (0-99999mAh).
  • Working hours display window (0-99H) unit minutes.
  • Working time and space display memory function after power off.


  • This power meter tester may not support fast charging for some type of smartphones and devices.

Package Inclusions:

  • 1 x USB Test Meter.

Before purchasing this item, Aixonne recommends you check out these items too!

We recommend you to read this article about choosing the best USB flash drive.

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