LCD Screen Mini Creative Phone USB Tester Portable Doctor Voltage Current Meter

Original price was: $17.79.Current price is: $16.79.

(15 customer reviews)
76 (reviews)

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• This test can be a USB charging current, voltage, discharge capacity,  intelligent devices.
• It can be very easy to find digital device charging problem.
• Tester three dimensional size 60 * 28.5 * 15mm (without cable), about 15cm  length of the line.
• The only button on the tester is used to view and test data switch, the  tester can store 10 groups of test data

1. Input Voltage: 3V – 7V
2.Input current: <3.4A
3. Parameters that you can test: Voltage of battery. Current of battery, value of discharging capacitor.
(Total ten parameters)

4. Communication function: Yes
5. Parameters adjusting function:Yes. Equipment for parameters adjustment: One electronic load,
one constant current  source. Voltage of constant current source should be set to 8.5V
There  are 3A, 2A, 1A and 0.3A models for current adjusting.

Here is a example for 3A:
When you set electronic load at 3A model, the current will be adjusted step by  step.
It will cost you about 10 seconds and you can see the result changing procedure in the LCD screen.
When you see the 3A result shown in LCD screen, the  adjustment process is finished. You can shut
off the electronic load and the  parameters will be saved automatically.

6.Clean the data: Push the button until the parameters changed to next sets of  parameters. Then release the button.
Then the next sets of parameters will be started and they will start from zero.

7. Check the parameters: Quick beat the button double times(within 0.5s), then  it is checking model.
The LED background will be flash.Then you can see the next  set of parameters in LCD screen. Quick beat the
button double times again, you  release the parameters checking model. LED background be be light with flash.

8. Over voltage or under voltage: An arrowhead will be shown in LCD screen and  LED background will flash.
Push the button and LED will be light without flash.

 It will last 30s.
9. Turn on model: The LCD screen will show all parameters within 1s when you connect power supply
by Micro USB or male plug of USB with wire.(It is to check whether the LCD screen  is good or not).
Then you can see the parameters used last time(capacitor and  which set of parameters). You also can
see the current voltage, current and over  voltage or under voltage. Please see following illustration.

USB output port can be connected to a data line, a discharge resistor or the  like cable devic
comprising a data communication function, the data does not affect the data transmission line.

Test specifications, voltage can not exceed 7V, current can not exceed 3.5A.


When the voltage is lower than  4.7V on the instrument display or higher than 5.3V,
the LCD screen will flash, it does not affect the use.

1VA010 1VA010 24

36789VA010 3

Additional information

Weight 0.03 oz
Dimensions 1 × 1 × 1 in


Model Number


Operating Temperature


Brand Name


Display Type

Digital Only

DIY Supplies


Accuracy Class


Power Supply


Measuring Range


15 reviews for LCD Screen Mini Creative Phone USB Tester Portable Doctor Voltage Current Meter

  1. Rachel Curtis

    two weeks delivery

  2. Lauren Snyder

    order shipped in 17 days, bundle full, suitable description, (plastic bag) is not damaged, workmanship good, performance verified вскрытии when packaging, three parameters (voltage, current and capacity) shows correctly. under light angle a two segments (not operability сказывается) thank you very much honestycentre’s store, aliexpress shipping standard, ems, aliexpress russia post

  3. Ethan Warren

    work perfectly. display смещен just only.

  4. Sean Patel

    EVERYTHING, arrived well packed, the problem free ONE SCREEN Is than had smudge stick the display. free shipping selling figment sent 5 days after payment. and works. the detail Is tardó More two months free ride clothing.

  5. Judith Rogers

    good goods. seller recommend. дошло. received via

  6. Edward Sims

    device is working as excellent written. to seller.

  7. John Schneider

    the standard usb hub

  8. Eugene Porter

    less than пришёл month. volts, амперы shows current considers. all in good, advice

  9. Janice Bishop

    the item has been very fast mail wine 7 days not come post normal goods.

  10. Jennifer Stone

    only trackable track china. tester working, satisfied overall

  11. Bobby Harrison

    work, шла package but very long.

  12. Jesse Howard

    standard as

  13. Andrea Allen

    Excellent international AliExpress seller, highly recommended. Thanks from Chile!

  14. Bobby King

    Thank you friend! Everything is wonderful!

  15. Timothy Hayes

    пришло в срок, упакованно в пакет с пупыркой. продавца рекомендую.

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