Condition: 100% Brand New r
Item Type: USB Tester r
Material: ABS r
Color: Black, White (Optional) r
Input Voltage: 4-30v r
Voltage Resolution: 0.01V r
Test Current: 0.05A-3.50A r
Current Resolution: 0.01A r
Capacity Range: 0-19999mAH r
Accuracy: Plus or Minus 1% r
Line Consumption: 0.1 r
Test Content: Battery Voltage, Current, Discharge Capacity (10 sets of data in total) r
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Instructions for Use: r
1. Measure voltage and current: plug the USB male head into a 5V charger, plug the female socket into a mobile phone and other devices, and directly read the voltage and current parameters r
2. Measure the quality of the MicroUSB cable: plug the mobile phone and other devices into the female socket, first plug the 5V charger with the male head of the machine, remember the voltage, and then use the Micro USB cable from the 5V charger to the Micro USB hole of the machine to remember the voltage and the voltage gap. The smaller the MicroUSB cable, the better the quality. r
3. Measure the output power and efficiency of the mobile power supply: first connect the machine to the mobile power supply, turn on the mobile power supply, long press the button until the capacity data returns to zero, insert the mobile phone and charge it several times until the mobile power supply is turned off and automatically shut down. The next time the machine is turned on, the display capacity is the mAH output of the mobile power supply. Note that this mAH is much smaller than the nominal mAH. Output power mAHxoutput voltage 5V / battery mAHxbattery voltage 3.7V = mobile power efficiency. r
4. Data switching: click the button to switch to the next group of data, double-click the button to switch to the previous group of data. r
5. Data reset: Press and hold the button for more than 3 seconds to reset the data in the current group.