LCD USB Voltage/Amps Charging Capacity Meter

LCD USB Voltage/Amps Charging Capacity Meter Tester Multimeter Test Speed of Chargers Cables Capacity of Mobile Phone Feature: 1. At the same time, the voltage and current mAH data are displayed, which is convenient for viewing and can detect the mAH output of the supply. 2. Multiple sets of detection data are saved, and the power-off saving function does not affect data transmiion 3. Higher precision, current parameters will not jump around randomly, current sampling 25 milliohms, le lo 4. With precision current calibration function, the current accuracy is higher 5. Safe charging, real-time monitoring to master your charging data Specifications: 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 lo: about 0.1s Test content: battery voltage, current, discharge capacity (10 sets of data in total) Instructions for Use: Measuring Voltage and Current: Plug the USB male plug into the 5V charger, the female socket into the mobile phone and other equipment, 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 to full capacity 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 Micro USB Cable Quality: When plugging mobile phones and other devices into the female socket, first plug the 5V charger with the male head of thehine, remember the voltage, and then use the MicroUSB cable to insert the 5V charger into the MicroUSB hole of thehine and remember the voltage. The smaller the voltage difference, the better the quality of the MicroUSB cable. Measure The Output Capacity and Efficiency of The Supply: First connect the power bank to thehine, turn on the power bank, pre and hold the on until the capacity data returns to zero, insert the mobile phone and charge more until the power bank runs out of power and automatically shuts down. The displayed capacity is the output mAH when thehine is turned on time. Note that this mAH is much smaller than the nominal mAH, output mAH*output voltage 5V/battery mAH*battery voltage 3.7V= efficiency Data Clear: Pre and hold the on until (the number of sets of data) becomes the set and then release the key, it will automatically jump to the set of data starting from zero. Data View: Double-click the on (within 0.5S) to enter the viewing data viewing mode, the backlight LED will flash, and then display the set of data again, double-click to exit the data viewing mode, and the backlight LED will be on for a long time. Voltage Is High or Low: LCD screen arrows, backlight LED will flash, alarm prompt. Pre the on, the LED is always on for 30S. Power-on Status: Turn on the power supply through MicroUSB or USB male connector with cable, the entire content of the LCD screen will display 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: Current and voltage charging tester*1

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