Description

Features: 1. Simultaneously display the voltage and current mAH data, which is convenient for viewing and can detect the output mAH of the mobile power supply 2. Save multiple groups of test data, and the power-off save function does not affect data transmission 3. Higher accuracy, the current parameters will basically not jump randomly, current sampling 25 milliohms less loss 4. With precise current calibration function, the current accuracy is higher 5. Safe charging, real-time monitoring and mastering of your charging data The main parameters: Input voltage: 4-30V Voltage resolution: 0.01V Test current: 0-3A Current resolution: 0.01A Capacity range: 0-19999mAH Accuracy: plus or minus 1% Line loss: about 0.1 ohm Test content: battery voltage, current, discharge capacity (a total of 10 sets of data) Instructions for use: Measuring voltage and current: Plug the USB male connector into the 5V charger, and the female connector into the mobile phone and other devices, and directly read the voltage and current parameters Test battery capacity: Use a linear charging circuit such as TP4056 to charge a completely dead battery through this capacity meter, and the capacity reading is the battery capacity. This method can also be used to measure the charging capacity of the mobile phone, and even calculate the charging efficiency of the mobile phone. Test the quality of the MicroUSB cable: Plug the mobile phone into the female socket, first plug in the 5V charger with the male connector of the machine, remember the voltage, and then use the MicroUSB cable from the 5V charger to the MicroUSB hole of the machine to remember the voltage. The smaller the voltage gap, the better the quality of the MicroUSB cable. Test mobile power output capacity and efficiency: First connect this machine to the mobile power supply, turn on the mobile power supply, press and hold the button until the capacity data is zero, insert the mobile phone to charge more until the mobile power supply is out of power and automatically shut down. The next time you turn on the machine, the display capacity will be the mobile power output mAH. Note that this mAH is much smaller than the nominal mAH, output mAH*output voltage 5V/battery mAH*battery voltage 3.7V=mobile power efficiency Data cleared: Press and hold the button until (the number of data sets) become the next set and then release the button, it will automatically skip to the next set of data and start from zero. Data view: Double-click the button (within 0.5S) to enter the 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 the backlight LED will stay on. High or low voltage: The arrows on the LCD screen and the backlight LED will flicker, and the alarm will prompt. Press the button and the LED is always on for 30s. Power-on state: Turn on the power through MicroUSB or USB with a cable, the entire content of the LCD screen is displayed for 1S (check whether the LCD screen is intact), and then display the last data (capacity, and which group of data), the current voltage, current and voltage are high Or low prompt Package Included: 1* Tester