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LCD Screen Mini Creative Phone USB Tester Portable Doctor Voltage Current Meter Mobile Power Charger Detector 40% off

(115 customer reviews)

In stock



LCD Screen Mini Creative Phone USB Tester Portable Doctor Voltage Current Meter Mobile Power Charger Detector

If you want to buy more , you can pay in this link: //www.aliexpress.com/store/product/LCD-Mini-Voltage-and-Current-Detector-Mobile-Power-USB-Charger-Tester-Meter/408984_32347045878.html?spm=2114.12010615.0.0.4PQJwO

• 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.

Voltage of constant current source should be setted to 8.5V,if your voltage is over 30V, we afraid that it will broken, hope you can understand, thank you.

​No retail box.

USB Charger Doctor Current Voltage Charging Detector Mobile Power Current and Voltmeter Ammeter Tester

Can easily measure the operating current of the output voltage of the USB port and equipment 2. smallsize , no power , and other ancillary equipment, plug and play also detect USB charger output voltage and current are standard suitable for factories, Laboratory and users.

USB Current Voltage Tester

Condition: New

Measuring range: DC 3v – 9v, current: 0-3a (error: ± 1%), 5a biggest support

5a current (if more than 3a, error will be larger than 3%)

Color is shown as pictures
PLS NOTE that due to lighting effects, monitor's brightness/ contrass settings ect, there could be some slight differences in the color tone of the pictures and the actual item!

1 X USB Current Voltage Tester

  • USB Charger Doctor Mobile Battery Tester Power Detector Voltage Current Meter

    Detection range:
    Voltage: 3v-7v error 0.1v
    Current :0-2.5A error 0.01A
    It can measure the USB-powered devices empty and .
    Easy to use and practical.
    Compact and easy to carry, no additional power supply, plug and play.
    It can easily measure the output voltage of the USB port and the device operating current or load voltage
    Detect any USB charger such as PC USB, home charger, car charger.
    Wide range of applications, any phone, any electronic product, Easy to use.
    suitable for factories, laboratories and personal use.

    Net weight:15g

    Packing content:
    1 x USB power current and voltage tester

  • new arrive USB Load Resistors Mobile Power Aging Resistance Module 1A 2A charge current detection

    Brand new and high quality.
    It's normal when welding resistance may occur heated white smoke or odor phenomenon.
    New products can freely be switched with a switch, very convenient and easy to use.
    USB load resistance, is mainly to do discharge test, if the charger or mobile power supply output current is 2A, load meter power is 5V * 2A = 10W, if the output current is 1A, then the power load is 5V * 1A = 5W.
    Switch and usb interface design.
    Color: Green.
    Rated Power: 5W-10W.
    Technology: Ceramic Composition.
    Resistance: 1A-2A.
    Type: Fixed Resistor.
    Size: 7.3cm x 1.8cm x 1.0cm.

    More about item
    usbmobile powerload resistorpower resistoragingresistance measuringcurrent dischargeresistor

    Dischargeresistorswill become hot, the temperature at80 ~ 85 °,pleasenote thatanti-scald.

    You caneasilytest mobilepower chargingtreasure, cell phone charger, USBpower supplyoutputcurrent isstandard,as long as theUSBport tothe resistanceabovethe line.Andcanmove thepower and USBpower adapterto dothe aging test.

    Discharge resistor will burn,But very hotPlease pay attention to the protection, anti-heat your hot, and work.
    Internal tested resistance and appearance in General.
    Treasure can facilitate testing of mobile power charging, mobile phone chargers, USB power supply output current standards, as long as the USB port up top on the line of resistance. And aging tests on mobile power and USB power adapter.
    2 a resistive load by two cement resistor in parallel with 5 ohm 10W power into 2.5 euro
    Note: the discharge current is marked around, not 1.00A or 2.00A, is close to this value, such as 1.8A, 2 a display, such as relative differences, for normal conditions, please, thank you!
    Package included:
    • 1 x USB Load ResistancePower Resistors Mobile Power Aging Resistors module 2A 1A

Based on 115 reviews

4.9 overall

Only logged in customers who have purchased this product may leave a review.

  1. I***n

    I advise the producer


  2. B***s



  3. V***k

    All the norms, it works conveniently, but it’s expensive, bitch.


  4. Customer

    Already had the experience of using such testers, everything works perfectly, in the service is an indispensable thing… on this order again, and a couple of others to check, everything turned out to be as always top!!! According to this store recommend! Product recommend! The package reached Hmao in 25 days.


  5. L***O

    Delivery of shattery. Works out of the box perfectly.


  6. Y***y

    Everything works


  7. D***h

    The device works correctly, but it has many scratches. Looks like he’s not new. It’s unpleasant.


  8. Y***f

    Bad soldering. It works once.


  9. A***v

    A cool tester but somehow strangely measures the capacity


  10. S***o

    The tester came fast, but the track on the site was different from the one on the package. The tester works, tried all the cables at home)


  11. Customer



  12. A***d



  13. D***n

    i really need this stuf.. but my packet never comes. it is already solved by dispute.. thank you to store


  14. B***h

    Very pleased,


  15. U***r

    Here’s the description.


  16. D***u

    At this time not easy with coronovirus the parcel finally came. It’s been a long time, but it’s gone.


  17. A***r

    The item corresponds. Delivery fast (2 weeks). Seller Thank you, recommend!


  18. S***y

    Everything is OK. The store is good.


  19. *.

    The glass was all scratched! And this is not a protective layer! And the plastic!


  20. S***v

    The good thing


  21. V***k

    I liked the old models better.


  22. V***r



  23. A***o

    Thank you! Fast Delivery (several at once, different orders ordered in one day-came in one parcel). Received at the post of Russia, in his office (which pleased)!


  24. P***c

    Delivery is very fast!


  25. O***v

    Fixed, new, delivery 17 days


  26. R***k

    Received the goods. Checked it. It works. Thank you!!!


  27. C***i

    Working and very elegant, the numbers are seen in a very crisp.


  28. V***e

    Great store, good product, fast delivery.


  29. N***l

    Corresponds to the description, I recommend the store


  30. R***r

    Everything is fine, I recommend!


  31. M***v

    Prishol 3 weeks before Saratov


  32. S***s

    Works cool


  33. N***f

    works like a charm and offers nice options to view voltage, amperage and miliamps per hour. came in box.


  34. A***v

    It’s all right, though the goods came with scuffs


  35. Customer

    For 3 weeks to Moscow, the track was tracked, the device is whole, on the screen of the film, it works.


  36. B***a

    Goods of good quality, ordered 11.11.19G. Received 30.11.19G. I’m happy. I recommend the store.


  37. G***h

    The order came normal, the glass is not closed with film, noticeably sarapinki. It feels like Boo


  38. A***n

    Very good


  39. A***v

    It came very quickly. Everything works


  40. S***v

    The order reached Smolensk for 3 weeks. Description accurate. Packing-package with puffy, no damage. With the store did not communicate, there was no need. Tried, works. I can not say about accuracy yet, there is nothing to compare with.


  41. B***r

    The product corresponds to the description, came quickly and working


  42. D***z

    Shipment dotarła to me very quickly. All is OK outside only mierzeniem capacity, because I believe that measurement is wrong


  43. A***v

    Good tester, works well.


  44. E***n

    The tester corresponds to its price at 1,8 amps shows zeros, up to 1.8A readings are less accurate, the voltage up to 6 V without problems, who need the tester and not the indicator better to take the models more expensive


  45. E***n

    Load man as a load man loads 1A and 2A, heats like a stove, cheap and angry, the store recommend


  46. G***h

    The goods did not come. Refund without problems


  47. L***k

    Cool thing.


  48. V***v

    Item ordered 2019-09-18, arrived 2019-10-07, the item works fine, no complaints. I advise


  49. S***k

    Product did not arrive store returned the money


  50. M***v

    Received but did not have time to check how to check i will write necessarily!


  51. G***e

    Order accepted. thanks to the store. no claims. I recommend to have a case


  52. A***v

    Delivery three weeks to Novgorod the Great. Measures ± as acubattery (although Xs can be equal to it). A little tugovato enters the rose Ku (USB-male/input cord), but this is even a plus


  53. R***r

    Everything is fine, works, delivery two weeks to moscow


  54. E***n

    Quickly clear) works, I recommend)


  55. S***V

    ok thank youuu


  56. U***r

    Checked, works. I recommend.


  57. A***n

    Pre-el fast


  58. S***v

    Ordered 21.09. Received 22.10.19. the goods came very quickly, everyone is happy. Not tested for a long time, if it will not work, I will add a review. Seller recommend!


  59. Y***v

    Everything is fine! I buy a second time from this Seller. The goods are working. My respect Seller!!!


  60. O***v

    Thank you very much. It came very quickly. I ordered from this store for the first time. I found it in different departments. It came very quickly. Usually a month. And then 2,5 weeks came. Everything works fine


  61. V***v

    Ljkuj IKJ


  62. A***v

    A good toy useful in the household.


  63. W***o

    Very fast shipping! Goods is working properly. Super boxed!


  64. V***v



  65. P***p

    Everything works, instructions for use are in the Internet.


  66. V***v

    There was a package to saratov for a month. Track tracking to china border. The product corresponds to the description. Works. I recommend the store and the product.


  67. Customer

    Top Analyzer! Can remember 10 devices, intuitive one-button control + micro-USB hole)


  68. Customer



  69. V***r

    Good product


  70. I***v

    Plus minus works.


  71. Customer

    Working good. Recomend.


  72. E***h

    Came scratched, without a film on the glass. Not a presentation!


  73. M***i

    Product good, useful-to my notice-to distinguish the real capacity of a charger… lacks a start guide but the rest all OK.


  74. A***v

    Works. How accurate the testimony is not known. Readings are always different almost to 1000 when charging in a fully discharged Akuma (turned off phone when charging)


  75. R***g

    Super very good recommendations very much.


  76. E***l



  77. A***n

    Everything works


  78. I***n

    The goods came quickly. Corresponds to the description. But it looks like some scratched. As if he was already in use. Most likely this kind due to the careless assembly of the manufacturer. Kind of works.


  79. S***k

    The product is cool, came in less than 3 weeks!


  80. Z***v

    Everything is fine


  81. A***v

    Portable USB tester current meter mobile chargers with LCD screen, in the work did not check, check to write off. Packed well, store recommend. Delivery to the Moscow region took less than 3 weeks (Ordered 22.10.2019 received 09.11.2019).


  82. D***a

    Delivery to Moscow 24 days. The product corresponds to the description. Quality is good. The readings are accurate.


  83. N***v

    Siberia. Ordered on October 8, delivered on November 12. At the moment it functions correctly.


  84. A***v

    Turns on, something shows


  85. D***v

    Corresponds to the description


  86. T***t



  87. A***s

    Omsk reached in 14 days. The product is consistent, i recommend. Thank you very much!


  88. I***s

    works fine


  89. A***z

    The order was almost a month! Corresponds to the description!


  90. S***n

    Arrived late bit but product superior tester ma, Volt thanks to the store


  91. P***m

    All OK recommend


  92. D***y

    Works, something even shows. I will test charging


  93. M***v

    All ok. Shows current, voltage, amount of mah, has memory for 10 values (when power off data is saved)


  94. D***v

    Accuracy is so. Ordered 2 PCs When connected to the same USB port, one stably shows 4.94 V, the second one shows 5.05 v.


  95. N***a

    Everything works.


  96. K***v

    It came in 20 days, it works fine! A little short of the built-in time counter. But there are 10 memory cells.


  97. S***v

    Thank you very much! Delivered quickly. Works


  98. A***v

    The goods are satisfied. Seller recommend.


  99. J***s

    Thank you I’m fine


  100. E***o

    It was 3 weeks, everything was tracked, it came to the post office, it works well


  101. B***b

    All good


  102. M***m

    Good product, works well, fast delivery


  103. A***j

    Thank you very great store it works very well


  104. G***g

    The meter is excellent, the numbers are clear but very short cord


  105. B***e

    Think faster than came four key Thanx


  106. S***n

    Not a bad toy, delivered on time


  107. A***h



  108. Customer

    The order was lost at the post office of Russia. The store has nothing to do with it.


  109. V***n

    Okay, that’s right.


  110. I***v

    30 days to Tashkent, works, I recommend


  111. R***r

    Good product, great store. Thanks.


  112. A***N

    buy from again


  113. Customer

    The profit is less than two weeks. I do not know the accuracy of this device, but like working. I checked my gadgets it turned out that all the battery volume is less than the claimed.


  114. M***Z

    Ultra long shipping Goods Working works


  115. G***s