USB Digital Voltmeter Ammeter DC Voltage Current Volt Ampere Car Phone Battery Capacity Indicator Meter Tester Detector Monitor

YIDI 1pc USB Digital Voltmeter Ammeter DC Voltage Current Volt Ampere Car Phone Battery Capacity Indicator Meter Tester Detector Monitor

Note: Different type USB voltmeter ammeter have different function and specification. Choose the right option of the item you need when place order.

1. Type 1 3 in 1 multifunction USB Voltage Ampere Tester

Specification:
Color: Black
Material: Plastic
Input Voltage / Current : 3-9V / 0-3A
Output Voltage / Current: 4-20V / 0-3A
Resolution: 0.01V/0.01A
Accuracy: ±1%

Features:

LCD Display: Easy and clear to read

Multifunction: Display the state of appliance charge, voltage, current, capacity, working time at a glance.

Power-off Memory: Store capacity and energy data when the output power is cut off. Easy to find the charging problem of digital devices.

Portable: Compact, light, mini size makes it easy to carry and store.

 

USB PD Detector
Real-Time detection
Support QC 2.0/3.0
Current | Voltage | Current | Capacity | Timing | Automatically save data when power off

Real-Time Monitoring
Real and effective data
Identify the effect of the data cable and charging head/battery

LCD Display Illustration

① Voltage: 0-3V

② Working Time: 0-99 Minutes

③ Current: 0-5A

④ Battery Capacity: 0-99999mAh

How to Use
① Input Port: Connect to power output port
② Output Port: Connect to the USB data cable port
③ Reset Button: Long press for 3-5 seconds to clear the record

 

 

2. Type 2 Dual Display LCD Voltage Ampere Meter Detector

Specification:
Color: Black
Material: Plastic
Input / Output Voltage : 3-9V
Input / Output Current: 0-5A ( Suggest use under 0-3A)
Resolution: 0.01V/0.01A
Accuracy: ±1%
Communication Function: Yes
Reading Calibration Function: Yes

 

How to Use
① Input Port: Connect to power output port
②③ Output Port: Connect to the USB data cable port

3. Type 3 LCD USB Voltmeter Ammeter Tester
 

Specification:
Color: Blue
Material: Plastic
Input / Output Voltage : 3-7.5V (Detect cell phone charger voltage if meet DC 5V standard)
Input / Output Current: 0-2.5A
Resolution: 0.01V/0.01A
Accuracy: Voltage ±1%; Current ±2%
Working Temperature: 0-60℃
Full range voltage drop: 200mV (when measuring current)

Features:
1. Conveniently measure the output voltage of the USB port and the working current of the device
2. Detect whether the output voltage and current of the USB charger meet the standard.
3. Automatically detect updates
4. Support Export data to Excel

 

 

Voltage and Current Cycle
① 0.91A — Current detection display
② 5.1V — Voltage detection display
Wait for 3 seconds to change the reading

 

 

4. Type 4/5 3 in 1 LCD USB Volt Meter Ammeter Detector

Specification:
Color: Black/White
Material: Plastic
Input / Output Voltage : 3-15V (under 15V all will be ok)
Input / Output Current: 0.05-3.50A
Battery Capacity: 0-19999mAH
Resolution: 0.01V/0.01A
Accuracy: ±1%
Circuit loss: 0.1Ω
Test Term: Voltage, current, capacity (10 sets data in total)

Function:

Voltage and Current Measurement: Plug the USB male connector to charger and female connector to devices, red the voltage and current directly.

Test MicroUSB Cable Qquality: Connect the tester to device and charger, remember the voltage. Then use the cable connect the tester and charger, remember the voltage. The smaller the voltage gap is, the MicroUSB cable quality is.

Test Battery Capcaity: Use a linear charging circuit such as TP4056 to charge a completely dead battery through the tester. The capacity reading is the battery capacity. 

Test Mobile Power Ouput Capacity and Efficiency: Connect the tester to the mobile power supply, and turn on the mobile power supply. Long press the button on tester until the capacity data show zero. Charing mobile phone several times until the mobile power supply is dead and automatically shut down. Next time the tester turne on, the displayed capacity will be the mAH output of the mobile power supply.

Note: the mAH reading is much smaller than normal mAH.  Output mAH* output voltage/ (battery mAH*battery voltage)=mobile power efficiency

Data View: Quickly double-click the button (within 0.5s) to enter data viewing mode. The backlight LED will flash and then display the next set of data. Double-click to exit the data viewing mode, and then the backlight LED will stay on.

Data Reset: Long press the button until the number of data sets changed and then release the button. It will automatically skip to the next data set and start from zero.

High or Low Voltage Alarm: The arrows on the LCD screen and backlight LED will flashi and alarm will be displayed. Press the button and the LED will be on for 30 seconds.

Data Calibration Function Setting: 1x electronic load meter + 1x constant current source

The constant current source is adjust to 8.5V and above 10V (recommended 9V), and the electronic load meter is set to CC mode (constant current mode) 3A, 2A, 1A, 0.3A and four currents are calibrated separately.

 

LCD Display Illustration

① Voltage Values	② High Voltage Alert	③ Low Voltage Alert
④ Discharge Capacity Values	⑤ Current Values	⑥ Storing Data Number

Wide Application
USB Charger | Notebook | Desktop PC | Mobile Power | Ipad and so on

 

Current Monitoring

Green LED at 1A Red LED at 2A

5. Type 6 USB Discharge DC Resistance Load 1A/2A

Note: When working, the temperature of the resistance will be 80~85℃. Please pay attention to avoid scalding

You can easily test if your mobile power charging treasure, cell phone charger, USB power supply output  current meet the standard. via the Load resistance, you can do the aging test for your USB power charger adpter and mobile power supply and so on.

 

 

 ① Current Transform Switch
② Current LED Indicator: Green LED at 1A | Red LED at 2A