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PC And Office

USB Current & Voltage Tester, Voltmeter, Ampermeter, 12in1


Zkontrolujte si nap?. svou USB nabíje?ku, Powerbanku,  nebo USB port!

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$ 8.97

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U96 key button operation instructions:

1. Short Press key button to switch screen

2. Long press key button the screen to flip

3. Quickly double-click key button the power Wh to clear zero

4. Fast three-click capacity mAH to clear zero

5. Fast four-click time to clear zero


Product introduction:


12 in 1 measurement: voltage, current, power, battery capacity, impedance, parameters such as temperature, energy and time,etc. Manganin material: fast charging







 Blue Shell Black Screen Backlight USB tester



 Transparent Shell Black Screen Backlight USB tester




Technical parameters:

Voltage measuring range:  3.60V ~ 32.5 V       Resolution precision: 0.01 V  
Current measuring range: 0.00A ~ 5.00 A        Resolution precision: 0.01 A
Power cumulative range: 0 ~ 999999 WH      Resolution precision: 0.001 Wh
Capacity range :      0 ~ 999999 mAH       Resolution precision: 0.001 Ah
Temperature?0   ?   ~ + 80 ?           Resolution precision:1  ?
D+   Voltage  :     0.000V ~ 2.999 V     Resolution precision: 0.001 V
D-   Voltage    0.000V ~ 2.999 V     Resolution precision: 0.001 V
Load impedance: 0   ~ 999 ohm        Resolution precision:    1 ohm
Power metering range: 0 ~ 299.999 W                   Resolution precision: 0.001 W
Timing maximum time: 999 H 59 M 59 S                Resolution precision: 1 S
Time to refresh: > 500 ms/time > 500 ms/times
Measurement rate: 0.5 times/s
Use large equipment of the same metal manganese bronze sampling resistor
 (1.0 mm diameter metal manganese bronze material < 0.05R)
Product size: 65 x 24 x 14 mm
Since the power flow: < 0.003 A   ?    <  3mA  ?
Working temperature:  - 10 ~ + 60 ?
Working humidity: 10 ~ 80 (no doubt)
The pressure of work: 80 ~ 106 kpa
Cumulative capacity range: 0-99999 mah precision: 0.001 Ah (New features or D+ D-   Voltage )
Item size:65 * 24 * 14 mm
Net weight: 19g
Package weight: 28g
Color: Black
Display Color: white or   black
Packing content:
1 x Digital USB Voltmeter Tester
Function characteristics:
1) 8192 pixels HD display;
2) D+ D-   Voltage Tester
3) Memory power time data such as power;
4) The single monitoring shows charging voltage, current, power, power WH,mAH, charging time and other information;
5) USB is the copper pin and a low resistance in sampling technology, access after almost does not affect the charging speed;
6) Wide voltage from 3.60 V to 32.5 V;
7) Low and lower power since the < 0.003 A ?  <  3mA  ?
3.60V~32.5V / 0.00A~5.10A / 0 ~ 299.999W / 0 ~ 999999 WH / 0 ~ 999999 mAH / 0?~+80? / 0~999 ohm / 999H 59M 59S / D+ D- Voltage 0.000V ~ 2.999 V / Since the power flow: < 0.003 A 
8.When the power is > 0.5W, the time will be calculated!

Important Tips?

1?Backlit the default value is 10 seconds automatically shut down, if you need to close a backlight or normally open backlighting, please in double-click backlit screen button or click the button to adjust, thank you!


2?When the ambient temperature changes or the outside heat conduction to tester causes the current to not return to zero and the display shows 0.01A or 0.02A or otherwise,Please Hold on the key buttion then insert to USB Charger It can make the current temperature of the ambient current zero calibration,After the zero can more accurate measurements.And when in Zero calibration,the output can not have any load current consumption, so usb tester display 0.00A

More introduction: 



--- Variety of applications ---




--- Measuring interface more ---

Important Tips:

1. Products Shell Color?Transparent or Blue Color Optional

2. LCD Screen Backlight:White/Blue/Black/Orange 4 kind of Backlit Optional

3. Backlight default time is 10S time, through the key button, switch to the BL interface: 10S time interface, double-click or three-click to increase(+) time or decrease(-) time the backlight time ,and the same time  backlight switch "BL: OFF(time) ~BL: ON?time?1S ~ 59S range" Increase(+) or three-Click(-) after the reduction, then long press key is a continuous increase in the reduction.To meet the individual needs of users.

BL: 10S→ USB tester default backlight time is 10S, 10S automatically turn off screen brightness

BL: ON→USB tester backlight is on, always on

BL: OFF→USB tester backlight is off, there is no backlight

4.When the power is > 0.5W, the time will be calculated!


--- Voltage calibration software technology ---


--- Current software calibration technology ---



--- Minimal power consumption ~1mA ---


---  Fixed load measurement ---


--- Charging for mobile power measuremen t---





User Application cases:





--- Measuring interface more ---



--- Measuring interface more ---



    FAQ   ?

1. Why does the USB tester show 0.01A or other current when the load is not connected?

A: 1. This situation shows that the 0.01A temperature drift may be caused by the temperature drift current, make sure the USB tester is not connected to any load, and then press the button in the main interface 7 times, you can calibrate the current 0.00A!
2. Why does the USB tester show 0.01A or other current when connected to a load?
A: 1. Our USB test instrument using software calibration technology, in the case of no power, press and hold the USB tester's key, insert the USB charger, enter the USB tester background, shows 0.00A, long press the key , The screen appears "RESET" to restore the factory settings!
3. How to set the backlight?
A: The general factory settings, set the backlight is turned on is 10s Time, please click the button to switch to the BL: ON interface, press the button for three click consecutive strikes (-) or double-click (+) to set the backlight, there are three modes to choose from, you can set the BL : ON (backlight open), BL: OFF (backlight off), BL: 1S-59S (set the 1S-59S automatically turn off the backlight time)
BL: 10S USB tester default backlight time is 10S, 10S automatically turn off screen brightness
BL: ON USB tester backlight is on, always on
BL: OFF USB tester backlight is off, there is no backlight

About order


  • Bank transfer to Kč (CZK) account: 2000383290/2010 - variable symbol (VS): your order number
  • Bank transfer to €uro (EUR) account: IBAN: GB98 REVO 0099 7073 3173 14 / BIC: REVOGB21 - account owner: Ondrej Kylian - payment note (reference): your order number -> send as SEPA payment
  • Bank transfer to US Dollar (USD): IBAN: GB98 REVO 0099 7073 3173 14 / BIC: REVOGB21- account owner: Ondrej Kylian - payment note (reference): your order number -> send as SEPA payment
  • Credit card / Paypal

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  • FREE shipping regardless of the quantity of items ordered or the value of your order!
  • Delivery usually in 7-20 business days (not influenced by us and fully in the competence of post offices)
  • For expensive goods (eg phones) it is possible that you pay tax. You should not pay any taxes on ordinary small items (cases, clothes, toys, batteries, etc.).

60 Days Buyer Protection
we guarantee a refund or re-shipment if the order is not delivered within 60 days of shipment*
*due to the coronavirus epidemic, the period is extended indefinitely


  • We have been here for you for more than 6 years and we have tens of thousands of satisfied customers.
  • Free shipping! You do not pay shipping costs regardless of the number of items
  • Secure payment - we bear the risk of misuse of credit card information by chineese vendors.
  • Risk-free shopping - we guarantee a refund or re-shipment if something goes wrong.
  • Easy complaints - we will handle any complaints from chineese dealers
  • Loyalty program - for each order you will receive points that can be converted into discount coupons.
  • No spam - we will never bother you with unsolicited offers in the future.

If you are unclear, please read our customer's FAQ, or contact us - we will be happy to help you. Thank you.


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