LCD detector USB voltmeter ammeter power meter mobile charger capacity tester voltmeter current charging monitor

There is no need for professional wiring, easy to use, just connect to the USB port, discharge and charge, you can monitor the work current and voltage of the device, and count on the battery capacity.

The surface of the new machine screen is covered with a protective film, if you do not need to tear it off

It can be used as a simple daily testing tool

1. it can detect the charging capacity of the tablet and cell phone battery, and assess how much battery performance is decreasing, and regardless of whether it needs to be replaced.

2. It can detect the discharge capacity of the charging device and calculate the conversion rate of the charging device.

3. It can detect if the charging current from the digital device.

4. 5V router and other USB port 5V devices (such as USB lights) working current, etc.

It is equipped with usb line input and microusb port which can be input from other lines. One end is connected to a power supply / mobile power source. Please note that the default is to use the usb interface, it means 5v; the other end is connected to a load, which can be from a cell phone.


Parameter:

Input voltage: 3 V-15 V

Voltage resolution: 0.01 V

Test current: 0.05A-3.50A

Current resolution: 0.01A Capacity

range: 0-19999 mAH

, You can change them: plus or minus 1%

Line loss: about 0.1 ohm

Test content: battery voltage, current, discharge capacity (10 data sets in total)

Measurement of voltage and current:
USB male plugs in a 5V charger, female socket is connected to a mobile phone and other devices, and voltage and current parameters are directly read.
Measuring the quality of the MicroUSB cable:
Insert the mobile phone and other devices, for the first time use the male plug form of the machine to connect the 5V charger, remember the voltage and then using the MicroUSB cable to connect the MicroUSB hole with the 5V charger to Remember the voltage, the smaller the voltage gap, the better the quality of the MicroUSB cable.
Measuring battery capacity:
Use a linear charging circuit form such as TP4056 to fully charge a fully discharged battery through this capacity meter. The ability to read is the battery capacity. This method can also measure the charging capacity of a mobile phone and even calculate the charging efficiency of a mobile phone.
Measuring the phone's power output output and capacity:
For the first time connect the device to power the phone, turn on cellular energy, press and hold the button until the data is zero, insert the phone to charge many times until the mobile power is turned off automatically. The display capacity is mAH phone power output the next time the device is turned on. Please note that this mAH is much smaller than the nominal mAH, mAH output * output voltage 5V / battery mAH * battery voltage 3.7V = mobile power efficiency
Clear data:
Press and hold the button until (first data group) becomes the next group and then release the button, automatically jumping to the next set of data starting from zero.
Data view:
Quickly double click (within 0.5S) to enter: data display mode view, the LED backlight will flash, and then display the next set of data, double click to exit the data view mode, and the LED backlight will continue.
High or low voltage alarm:
LCD arrow and backlight LED will flash and the alarm will be fast. Press the LED button for 30 S light.
Power per state:
Connect the power via MicroUSB or USB cable with the cable. The entire content on the LCD screen will show 1 S (detecting if the LCD screen is intact), followed by the visitor and receiving the last data (capacity and first group of data), current voltage, current and voltage are high. Or low hint.
Data calibration function setting: one electronic load meter, one DC source.
The DC source is adapted for 8.5 V or above and 10 V or less (9 V recommended), and the electronic load is set to CC mode (direct current). The four currents 3A, 2A, 1A, and 0.3A are properly calibrated.
Take 3A as an example:
3A calibration: the electronic load is set to constant current mode 3A, the current fuel indicator screen LCD screen will be automatically and slowly calibrated (about 10 seconds). The current on the LCD screen will be changed. After calibration, electronic data loads will be automatically protected.
Item No .: KCX-17
Product weight: 50g
Dimensions: 60 * 28.5 * 15mm (without cable), the length of the line is about 15 cm.
Color: white, black, white (+ loads), black (+ loads)
Reminder:
1, this child has to be adjusted at the factory, can be used immediately after manual operation!
2. A protective film attaches to the screen, and you can see the smooth surface of the screen after you tear it off.