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Show USB multifunction tester 3V-30V Mini Present Voltage Charger Tester USB Energy Financial institution Meter

$2.19 $1.99

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Digital Show USB multifunction tester 3V-30V Mini Present Voltage Charger Capability Tester USB Physician energy financial institution meter

Efficiency parameters

1, enter / output voltage: 3V-30V

2, the enter / output present: 0A- 3A

3, the check capability vary: 0-99999 mA

4, accuracy: ± 1%

5, the check: voltage, present, discharge movement

6, the communication perform:

7. Timing: YES

8. The over-current safety: Sure

Second, the use

Energy show present and voltage, a single quick press the button for about 0.5 seconds to view the capability and timing screens. When displayed on the display screen press capability round button for 2 seconds to clear the saved knowledge. When the show display screen on the timing of the lengthy press button for 2 seconds shall be flashing numbers, after which press a single button for 0.5 seconds every time the cumulative 0.5 hours per block lengthy press 2 seconds to substantiate the save. To not adjusted to the timing of the timer perform 0 hours (0 hours is often open) cellphone is totally charged to mechanically flip off the output. No load 20 seconds mechanically shut down output. Present exceeds 3A will mechanically shut down when the output voltage is larger than 22V. Shut present output window shows OFF. Single quick press the button for about 0.5 seconds to activate the output.

Three traits

The cellphone is totally charged to mechanically flip off the output. No load 20 seconds mechanically shut down output.

It shows the voltage and present knowledge mAH, timing, simple viewing

It may possibly detect cell energy output mAH

Energy-down save perform

USB and MicroUSB port male double take energy, may be detected MicroUSB line high quality

Present sampling 50 milliohms, smaller loss

With precision present calibration, larger present accuracy (calibrated okay shipped)

Measuring voltage and present:

USB male plug 5V chargers, cell phones and different tools feminine insert, learn present and voltage instantly

MicroUSB line high quality measurement: feminine plug cell phones and different gadgets, first use the native male plug 5V chargers, do not forget that voltage, then MicroUSB cable into the bore in thoughts that the machine MicroUSB charger voltage from 5V, the smaller the hole voltage MicroUSB cable high quality is healthier

Battery capability check:

Use TP4056 and different linear charging circuit by this capability to the desk utterly empty battery is totally charged to full capability studying on the battery capability, using this methodology may be measured cost capability of the cellphone, the cellphone may even calculate the charging effectivity

Cellular measuring energy output capability and effectivity:

The primary machine linked cell energy, cell energy activate, lengthy press the button till the amount of knowledge to zero, into the cellphone and extra cell energy charging till no energy mechanically shut down. Subsequent displayed once you flip the unit capability is the cell energy output mAH. Word that this mAH than nominal mAH small output mAH * Output voltage 5V / battery mAH * Battery voltage 3.7V = cell energy effectivity

1 x usb tester

WORLDWIDE SHIPPING. (Besides some nations and APO/FPO)

2. Orders processed well timed after the fee verification.

3. We solely ship to confirmed order addresses. Your order deal with MUST MATCH your Transport deal with.

4. The pictures proven will not be the precise merchandise and are to your reference solely.

5. SERVICE TRANSIT TIME is supplied by the provider and excludes weekends and holidays. Transit time could differ, significantly throughout the vacation season.

6. You probably have not acquired your orderafter 30 days from fee, please contact us. We’ll hint your order and get again to you asap. Our objective is buyer satisfaction!

7. Supply Time:

1. You will have 7 days to contact us and 30 days to return it from the date acquired. If the merchandise is in your possession greater than 7 days, it will likely be thought of used and WE WILL NOT ISSUEA REFUND OR REPLACEMENT to you. There are NO EXCEPTIONS!

Transport price is bear by each vendor and purchaser in half.

2. All returned objects MUST BE within the unique packaging and also you MUST PROVIDE us with the delivery monitoring quantity, particular purpose for the return, and your order ID.

3. We’ll refund YOUR FULL WINNING BID AMOUNT, upon receipt of the merchandise in its unique situation and packaging with all parts and equipment included, AFTER BOTH Purchaser and Vendor cancel the transaction from aliexpress. OR, you might select to have a substitute.

4. We’ll bear all of the delivery price if the product(s) is (are) not as marketed.

1. 12 months Producer’s restricted Guarantee for faulty objects (excluding objects broken and/or misused after receipt). Equipment include a 3-month guarantee.

2. Faulty objects MUST BE reported and returned inside the guarantee interval (and within the unique packaging, if potential). You need to inform us what the defect is and provides us your order quantity. WE DO NOT REPAIR OR REPLACE ITEMS WITH AN


You conform to the entire above-listed insurance policies upon ordering on aliexpress!

We keep excessive requirements of excellence and try for 100% buyer satisfaction! Suggestions is essential. We request that you just contact us instantly BEFORE you give us impartial or damaging suggestions, in order that we are able to carry out up your satisfaction.

It’s unattainable to deal with points if we have no idea about them!


Mini Current Voltage Tester


USB Doctor power bank meter

input / output voltage:


the input / output current:

0A- 3A

the test capacity range:

0-99999 mA

Brand Name









Cable Tester

Model Number


Shipping and delivery

We are proud to offer international shipping services that currently operate in over 200 countries and islands worldwide. Nothing means more to us than bringing our customers great value and service. We will continue to grow to meet the needs of all our customers, delivering a service beyond all expectation anywhere in the world.

How do you ship packages?

Packages from our warehouse in China will be shipped by ePacket or EMS depending on the weight and size of the product. Packages shipped from our US warehouse are shipped through USPS.

Do you ship worldwide?

Yes. We provide free shipping to over 200 countries around the world. However, there are some locations we are unable to ship to. If you happen to be located in one of those countries we will contact you.

What about customs?

We are not responsible for any custom fees once the items have shipped. By purchasing our products, you consent that one or more packages may be shipped to you and may get custom fees when they arrive to your country.

How long does shipping take?

Shipping time varies by location. These are our estimates:

Location *Estimated Shipping Time
United States 10-30 Business days
Canada, Europe 10-30 Business days
Australia, New Zealand 10-30 Business days
Central & South America 15-30 Business days
Asia 10-20 Business days
Africa 15-45 Business days
*This doesn’t include our 2-5 day processing time.

Do you provide tracking information?

Yes, you will receive an email once your order ships that contains your tracking information. If you haven’t received tracking info within 5 days, please contact us.

My tracking says "no information available at the moment".

For some shipping companies, it takes 2-5 business days for the tracking information to update on the system. If your order was placed more than 5 business days ago and there is still no information on your tracking number, please contact us.

Will my items be sent in one package?

For logistical reasons, items in the same purchase will sometimes be sent in separate packages, even if you have specified combined shipping.

If you have any other questions, please contact us and we will do our best to help you out.

Refunds & returns policy

Order cancellation

All orders can be cancelled until they are shipped. If your order has been paid and you need to make a change or cancel an order, you must contact us within 12 hours. Once the packaging and shipping process has started, it can no longer be cancelled.


Your satisfaction is our #1 priority. Therefore, you can request a refund or reshipment for ordered products if:

  • You do not receive them within the guaranteed time (45 days not including 2-5 day processing)
  • You receive the wrong item
  • You do not want the product you have received (but you must return the item at your expense and the item must be unused)

We do not issue the refund if:

  • Your order does not arrive due to factors within your control (e.g. providing the wrong shipping address)
  • Your order does not arrive due to exceptional circumstances outside our control (e.g. not cleared by customs, delayed by a natural disaster)
  • Other exceptional circumstances outside the control of

*You can submit refund requests within 15 days after the guaranteed period for delivery (45 days) has expired. You can do it by sending a message on page.

If you are approved for a refund, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within 14 days.


If for any reason you would like to exchange your product, perhaps for a different size in clothing. You must contact us first and we will guide you through the steps.

Please do not send your purchase back to us unless we authorise you to do so.

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