Kcx-017 LCD USB Voltage Current Detector Mobile Power USB Charger Tester Meter
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 15 cm 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
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 device 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
Note:When the voltage is lower than 4.7V on the instrument display or higher than 5.3V,the LCD screen will flash,Does not affect the use
Because mobile phones and digital devices at low battery or full charge, the current and voltage is not a stable value, the application example of the discharge
device is a USB 1A or 2A discharge resistor.
The first group of pictures charger test
ipad original charger connected to 2A load resistor, the output current and voltage to 5.01v 1.89A
ipad original charger via USB HUB, connect the 2A load resistor and mobile phones,the measured value of the maximum current and voltage 5.01V 2.28A, very good charger,
Salcomp(a NOKIA company) charger connected to 2A load resistor, the output current and voltage to 5.01v 1.89A
Salcomp(a NOKIA company) charger via USB HUB, connect the 2A load resistor and mobile phones, the measured value of the maximum current and voltage 5.01V 2.20A,
very good charger,
BOSE charger 1A current load resistor connected to 2A current automatic charger immediately to protect the output, good charger
Mobile power connector USB HUB for mobile phone charging, the measured voltage and current values 5.00V 0.44A
Mobile power via USB HUB, connect the 2A load resistor and mobile phones, the measured value of the maximum current and voltage 4.86V 1.96A, Still good mobile power
The Second group of pictures USB data cable
LG 1M original data cable, 1A current charger, USB tester, test results 4.8V 0.92A
Palm 1.8M original data cable, 1A current charger, USB tester, test results 4.71V 0.90A
Samsung 1.5M original data cable, 1A current charger, USB tester, test results 4.80V 0.92A
Orange data cable, 1A current charger, USB tester, test results 4.22V 0.81A,This cable quality is not good
Mobile power discharge capacity test
Begins to discharge 0001mAh
10 minutes after the discharge capacity was 0164mAh
We conclude that the charging current is 0.98A, the discharge capacity of 10 minutes 164mAh, one hour 984mAh, this mobile power one hour charge or discharge capacity
of the entire 1A exactly
Note: This data is mobile power discharge capacity, the battery capacity is not, according to our experience, the discharge capacity is about 1.9 times the battery
The former Test Reference Manual Tester discharge capacity value is cleared, and the mobile power is fully charged.
1X Kcx-017 LCD USB Voltage Current Detector Mobile Power USB Charger Tester Meter
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