It is able to test a USB charging current, voltage, discharge capacity intelligent devices. With this device, USB charging this one becomes transparent, and can be very easy to find digital equipment charge Problems.

A single tester: Shipping only one tester, no other accessories. When the test connection to the device acts as a discharge resistor with a near dead phone, tablet and other digital devices. But digital device charging current changes greatly, not a fixed value.

Tester + discharge resistor: Delivery includes a tester, a discharge resistor, resistance band switch, you can freely switch 1A and 2A. Because resistor error, at 5V, 1A actual current about 950mA, the actual current around 1.9A to 2A. (Recommended to buy this package)

Resistance pattern as shown be

Note: When using a discharge resistor will be very hot, forbidden to touch, to avoid burns. Also, please do not put flammable when used on explosive objects, and do not place in direct contact with the heat resistance of the desktop, so as not to scorch the desktop.

Winding resistance may occur when heated white smoke or odor of the phenomenon, which is normal, ease of use

Tester three dimensions 60 * 28.5 * 15mm (without cable), input line length of 15 centimeters

mirco USB input port, you can use the phone line pled in here as an input line

USB output port, access to the phone, and so the discharge resistor load

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

Application examples

1. charger capacity test, which tests whether USB charger vacuity

Chargers test, insert 1A discharge resistor, the voltage 5.29V, current 1.02A, no problem 1A Description Output

Insert 2A discharge resistor voltage 5.26V, current 1.99A, Description Output 2A no problem

2. Charging line quality test

Take charging cord into the tester's micro USB input port, and then link capacity sufficient charger (it is recommended to test the charger output current), and access to appropriate discharge resistor, see the appropriate voltage. (General phone requires charging voltage is not lower than 4.7V)

Testing the charging cable 22AWG, access 2A after discharge resistor voltage 5.18V, online only loss of about 0.1V!

3. The charging current monitoring various devices

Test the phone, since the battery is nearly fully charged state, the current is only 0.52A

Test USB light board, 0.14A

4. Measure the capacity of mobile power

NOTE: Such measurements are mobile power output capacity, battery capacity is not, for the general mobile power, that is, about 1.9 multiplied by the output capacity of the battery capacity.

Press the manual method clears the capacity

Access discharge resistor 1A discharge until the automatic shutdown, shown above, is the capacity output capacity

Instructions for use

Performance parameters:

1, the input voltage: 3V-7V

2, the input current: <3.5A

3, display: voltage, current, discharge capacity (total of 10 groups can be stored)

4, the data features: with

5, the data calibration function: with

Calibration data set (the factory have been adjusted, such as the feeling of the following methods allowed self calibration): an electronic load device, a constant current source.

Constant current source transferred to 8.5V and less than 10V (recommended 9V), electronic load is set to CC mode (constant current mode) 3A, 2A, 1A, 0.3A, respectively, four current calibration. In 3A as an example:

When 3A calibration: electronic load setting the constant current mode 3A, LCD fuel gauge will automatically slow the current calibration (about 10S) you can see the current will change the LCD screen, turn off the electronic load calibration data is automatically protected.

6, the data is cleared: Press and hold the button until after (the first of several sets of data) to become the next group and release the button to automatically jump to the next set of data from scratch.

7. View: Double-click the button (0.5S or less), enter to view the data view mode, then the backlight LED will flash, and then press a button to display the next set of data, so after viewing several groups. Double-click to exit View mode, backlight LED grow lights.

8, power status:

By MicroUSB cable or USB cable tester comes with male power, the entire contents of the LCD screen is displayed for about one second (detection LCD stroke segment is intact), and then displays the last data (capacity, and third sets of data), high or low prompt voltage, current and voltage current.

Dual display USB voltmeter ammeter can display USB port output voltage and current!

Three kinds of intelligent identification circuit basically includes all mobile phones and tablet charging discrimination on the market today, where S = SamSung identification circuit D = Data (computer can transfer data to connect the phone) A = Apple 2.4A recognition circuit.